Answers
Answer:
B>A>C>D>E
Explanation:
The graph in the question shows the amount of petroleum reserves (on y-axis) in five regions of Europe (on x-axis). To arrange the amount of reserves in a decreasing order, this means we arrange from the most amount to the least amount of petroleum reserves (million of barrels of oil equivalent).
The height of the the bar graph represents the amount of petroleum reserves in each region. Hence, the tallest and shortest bar represents the most and least respectively.
According to the graph in the image, Region B has the most amount of petroleum reserves. Region A is next to it. Region C follows A. Region D follows and the least amount is Region E. Based on this, the descending or decreasing order is:
B>A>C>D>E
Related Questions
Please provide a legitimate answer and provide an explanation for the question below.
Describe one way the skeletal system helps the immune system function.
Answers
Answer:
The skeletal system is vital in supporting the immune system because : Bones contain marrow, a porous material which creates both white and red blood cells. This replenishment of cells allows the body to fight and expel harmful bacteria, environmental toxins, foreign material e.t.c.
The white blood cells formed by the marrow are instrumental in isolating and destroying harmful particles (either on the site or in lymph nodes), or transporting them to the kidneys or bowels for excretion.
NOTE : Some people have marrow disorders which prevent their marrow from forming new cells; this is caused most often by cancer. Today, it is possible to transplant marrow from a healthy individual to a sick patient, and so help their bone marrow form new white and red blood cells to fight their sickness.
I hope it helps :)
Why is the movement of basic elements in
ecosystems different from the transfer of
energy?
Answers
Answer:
Chemical nutrients and energy tend to flow in the same direction for most of an ecosystem. The big difference is that the chemical nutrients are ultimately recycled in the ecosystem while the energy is ultimately lost from the ecosystem to the universe at large. Energy in any ecosystem ultimately comes from the Sun
Explanation:
While energy passes through the biosphere and can never be regenerated, elements may. This makes the movement of nutrients through the biosphere distinct from the transfer of energy.
What is the movement of basic elements in ecosystems?
The main distinction is that while the energy is ultimately lost from the ecosystem to the larger universe, the chemical nutrients are ultimately regenerated in the ecosystem.
Energy changes forms as it flows through an ecosystem, but no new energy is produced.
Similar to how matter cycles throughout an environment, no new matter is created as atoms are rearranged into other molecules. As a result, energy and matter are preserved throughout all ecosystem processes.
Therefore, the movement of basic elements in ecosystems, different from the transfer of energy.
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Select the named the 4 main groups of fungi
Answers
Answer:
Chytridiomycota (chytrids),
Zygomycota (bread molds),
Ascomycota (yeasts and sac fungi),
and the Basidiomycota (club fungi).
Explanation:
MARK BRAINLEST PLEASE
Describing Comparative Investi
Name one benefit and one limitation of comparative
investigations.
Answers
Answer:
Limitation of comparative investigation is that when it is done on a huge population, huge amount cost is required. Explanation: Benefit of comparative investigation is that we can get descrete information about specific breed or species. It is important for the study of behaviour of many organisms.
Answer:
Comparative investigations provide large amounts of information and use a wide range of variables. However, they may reveal relationships that do not always indicate cause and effect.
Explanation:
Sample response from Edg.
Please help me I put 25 points
Answers
Explanation:
SORRY I AM NOT SURE
Some areas of an ocean are known as dead zones. These zones form when excess organic material decomposes. This increased decomposition uses up the oxygen from the water. Which human activity is most affected by the increasing number of dead zones in the ocean?
A.
Offshore oil drilling, because water in dead zones is toxic
B.
Commercial fishing, because fish cannot survive without oxygen
C.
Commercial shipping, because dead zones change the course of ocean currents
D.
Sand mining, because oxygen is not available to form the sands on ocean beaches
Answers
The human activity that should be most affected by the rising no of dead zones should be option b.
What is commercial fishing?It is the activity where the fish should be caught out also the other seafood for the commercial food.
In the case when it gives the large number of quantity of food with respect to the various countries that should be around the earth.
hence, we can conclude that The human activity that should be most affected by the rising no of dead zones should be option b.
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The correct option is B i.e. Commercial fishing, because fish cannot survive without oxygen
Commercial fishing is most affected by the increasing number of ocean dead zones because fish cannot survive in areas depleted of oxygen. Dead zones are caused by eutrophication and human activities such as fertilizer runoff.
A dead zone is a section of a freshwater or marine ecosystem where a significant portion of the native vegetation and animals has disappeared. Eutrophication, oil spills, the disposal of hazardous substances, and other human activities can all result in these zones. There were more than 400 dead zones in existence as of 2008; this number has been rising for a while. Fertilizer runoff from the Mississippi River basin has generated a dead zone spanning over 8,463 square miles in the Gulf of Mexico off the coast of the United States, which is one of the worst dead zones in the world. The Chesapeake Bay in the eastern United States is one of the lake and bay ecosystems that are badly impacted by fertilizer runoff containing phosphate and nitrate.The human activity most affected by the increasing number of dead zones in the ocean is commercial fishing because fish cannot survive without oxygen (Option B).3. One type of muscle contraction results in a stabilizing force. This:
A. Enables us to stand and sit upright
B. Means it helps us to lift heavy things
C. Makes the muscle very tense
Answers
Answer:it’s actually A NOT B so please choose A
Explanation:
A major disturbance that the ecosystem was able to recover completely from. ___________________________________________________________________ A major disturbance that caused the ecosystem to stabilize at a new equilibrium. ___________________________________________________________________ A major disturbance that caused the ecosystem to completely collapse. ___________________________________________________________________
Answers
Complete Question:
I made the grass diseased. This caused all of the populations above it (rabbit, snake, and hawk) to rapidly decrease over the 12 month period
(a) A major disturbance that the ecosystem was able to recover completely from __________
(b) A major disturbance that caused the ecosystem to stabilize at a new equilibrium ____________
(c) A major disturbance that caused the ecosystem to completely collapse __________
ANSWER:
(a) reducing the hawks to nearly zero
(b) removing all of the hawks
(c) removing all the diseased.
Explanation:
(a) reducing the hawks to nearly zero will cause low depletion of the producer (plants) and this will allow the plant to grow (without visible depletion) over a period of time.
(b) for the ecosystem to stabilize at a new equilibrium, the tertiary consumer (hawks) will be totally removed from the ecosystem. Since there's no tertiary consumer to checkmate the density of other components of the food chain, it will make it form a balanced ecosystem.
(c) for ecosystem to collapse, it's important to note that the removal of the producer (plants) will be bring about the loss of the ecosystem. Since, their is no manufacturer of food, the primary consumer (rabbit) in the food chain will be starved and overtime the rabbits will be wiped out and this will caused the loss of secondary and tertiary consumer in the long run.
The ecosystem is defined as the geographical area, in which animals, microbes, plants, along abiotic components live together to maintain equilibrium.
The correct blanks for the given statements are:
(a) reducing the hawks to nearly zero
(b) removing all of the hawks
(c) removing all the diseased.
The statements can be explained as:
(a) The reduction of hawks to zero will result in the depletion of plants or producers, and it will lead to the growth of the plants over a period of time.
(b) The ecosystem will be stabilized at a new equilibrium, the tertiary consumer or hawk if totally removed from the ecological niche.
(c) The ecosystem will be collapsed if the producers or the autotrophs deplete or vanish. The manufacturing of food will be halted and consumers dependent on producers will die and resulting in the collapse of the ecosystem.
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Which of these diseases can be treated with antibiotics?
*Lyme Disease
*The common cold
*Influenza
Answers
Answer:
The answer would be the Lyme Disease. This is because the common cold and influenza can't be treated with antibiotics.
A child was suffering from fever (38 ºC), cough, pharyngitis and his chest x-ray showed pneumonia at lower part of left lung. He was treated with penicillin and did not respond to treatment. Gram-stain and Acid-fast staining of sputum did not show Streptococcus pneumoniae or Mycobacterium tuberculosis. Using a molecular method (PCR), no virus was detected. What is this type of pneumonia is called and what is the most possible bacterial causative agent and how you confirm it
Answers
Answer:
Mycoplasma pneumonia
Explanation:
This is because with this type of pneumonia symptoms are milder than other which would tell why the fever is low and there are very few symptoms.
The pneumonia could be 'Walking pneumonia' caused by Mycoplasma pneumoniae. As the patient didn't respond to penicillin and showed no presence of Streptococcus pneumoniae or Mycobacterium tuberculosis, it suggests the causative agent is either drug-resistant or lacks a cell wall. Mycoplasma pneumoniae, which lacks a cell wall, fits this description.
Explanation:The type of pneumonia the child could be suffering from is possibly caused by the bacterium Mycoplasma pneumoniae, leading to a condition known as Mycoplasma pneumonia or 'Walking pneumonia'. Since the symptomatic child did not respond to penicillin treatment and Streptococcus pneumoniae or Mycobacterium tuberculosis were not detected, it can suggest the presence of a microorganism that either lacks a cell wall (which is the target of penicillin) or is resistant to this medication. The possible culprit, Mycoplasma pneumoniae, is a bacterium that lacks a cell wall.
To confirm this, a clinical diagnosis can be supported by serological testing, including a cold agglutinin test, which is generally positive for Mycoplasma pneumoniae infections. Direct detection through PCR, enzyme immunoassay, or indirect immunofluorescence can also be performed on sputum samples.
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What does the arboreal hypothesis suggest about the reason why primates have the unique features, such as opposable thumbs, that they have on their hand?
Answers
Answer:
Arboreal hypothesis suggest that primates have the unique features, such as opposable thumbs which occurs due to the adaptation of the body to the external environment.
Explanation:
Primates are those organisms that have some unique characters which are not present in other mammals such as their brain has big in size and there is a gap between fingers which helps them to hold things more precisely and tightly. These organisms belongs to kingdom animalia, class mammalia and order primates. Example of primates are monkeys and humans etc.
Answer:
This is the the physical adaptation to survive in this habitat(in the air/on the trees). the opposite thumbs allows easy grasping of three branches for locomotion within the trees, and from tree to tress,to easily pick up any objects, and to eat with one hands while maintaining balance on the tree with another hands.
Thus this opposable thumbs ensures precision and power.
Explanation:
Once DNA was shown to be the primary genetic material of life, a race among scientists took place to work out its structure. Which concept came from studying the amounts of each DNA base in different organisms?
Answers
Final answer:
The concept that came from studying the amounts of each DNA base in different organisms is base composition, which led to the discovery of Chargaff's rules.
Explanation:
The concept of studying the amounts of each DNA base in different organisms is known as base composition. Base composition refers to the relative proportions of the four DNA bases (adenine, thymine, cytosine, and guanine) in a DNA molecule. This concept was crucial in understanding the physical structure of DNA and how it accounts for the genes in different organisms.The study of base composition led to the discovery that the amount of adenine is roughly equal to the amount of thymine, and the amount of cytosine is roughly equal to the amount of guanine in a DNA molecule. This is known as Chargaff's rules. Different species have different percentages of each base, which contributes to the genetic diversity across organisms.QUESTION 5
What is a stem cell?
O A. a hollow, fluid filled ball of cells
OB-a cell that can give rise to more cells of its kind, along with at least one specialized cell
o C. an exact genetic copy
O D.a cell that can give rise to other types of cells
Answers
Answer: B
Explanation: I would say that it is B because when i looked up the definition it said that the stem cell was able to give arise to more cells of the same type but i might be wrong.
Which of the following can change shape and carries oxygen to cells that
need it?
white blood cells
red blood cells
veins
Platelets
Answers
Answer:
Red blood cells
Explanation:
Red blood cells are specialized cells that change shape and are responsible for carrying oxygen to various parts of the body.
Explanation:Among the choices given, red blood cells are the type of blood cell that can change shape and are responsible for carrying oxygen to cells that need it. Red blood cells contain hemoglobin, a protein complex that binds to oxygen and allows for its transport throughout the body. Unlike white blood cells, which are part of the immune system, or platelets, which are involved in blood clotting, red blood cells have the primary function of gas exchange, particularly oxygen delivery.
Red blood cells (RBCs) are the cells that can change shape and carry oxygen to cells that need it. They are the most numerous cells in the blood and consist mostly of hemoglobin, which binds with oxygen. RBCs deliver oxygen to cells and remove carbon dioxide as waste.
Indicate whether the following statements are true or false. If a statement is false, explain why it is false. A. Generally, the total number of nonpolar amino acids has a greater effect on protein structure than the exact order of amino acids in a polypeptide chain. B. The "polypeptide backbone" refers to all atoms in a polypeptide chain, except for those that form the peptide bonds. C. The chemical properties of amino acid side chains include charged, uncharged polar, and nonpolar. D. The relative distribution of polar and nonpolar amino acids in a folded protein is determined largely by hydrophobic interactions, which favor the clustering of nonpolar side chains in the interior.
Answers
A. False. The order in which amino acids are linked is unique for each protein and isthe most important factor in determining overall protein structure.
B. False. Peptide bonds are planar amide bonds that are central to the polypeptide
backbone formation. The atoms in the amino acid side chains are not considered
to be part of the backbone.
C. True.
D. True.
A. The total number of nonpolar amino acids has not a greater effect on protein structure than the exact order of amino acids in a polypeptide chain is the false statement.
B. The atoms that form peptide bonds (which are a component of the backbone) and the atoms that link them are collectively referred to as the "polypeptide backbone". This backbone is made up of N-C-C.
C. The chemical properties of amino acid side chains having charged, uncharged polar, and nonpolar is the true statement.
D. The relative distribution of polar and nonpolar amino acids in a folded protein which is determined largely by hydrophobic interactions is the true statement.
Therefore, the correct options for A, B, C and D are False, False, True and True respectively.
The structure and function of a protein are influenced more by the particular amino acid sequence in its polypeptide chain than by the total amount of non-polar amino acids. "Polypeptide backbone" includes the N–C–C backbone as well as the atoms that bind to peptide bonds to generate them.
Amino acid side chains can be classified as having charged, uncharged polar or non-polar groups and exhibit a variety of chemical characteristics. Protein folding is fundamentally influenced by hydrophobic interactions, which cause nonpolar amino acids to assemble inside the protein, thereby improving stability and structure.
Therefore, the correct options for A, B, C and D are False, False, True and True respectively.
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It is proposed that the periplasmic space of gram-negative bacteria is iso-osmotic relative to the cytosol. If true, this poses a challenge for these cells when having to deal with turgor pressure. For example, it is generally believed that the rigid periplasmic peptidoglycan layer of these cells could resist the force of turgor pressure if it were exerted outward across the inner plasma membrane; thus, preventing plasma membrane lysis. However, if the periplasm is iso-osmotic with the cytosol, as proposed, the outer membrane must be under stress from the outward force of turgor pressure. Given that it is not thought that the outer membrane is built to withstand high turgor pressure, propose a plausible mechanism for how these cells resist lysis of the outer membrane in the face of high, outward turgor pressure force.
Answers
Answer:
In case of these gram-negative bacteria, the outer membrane (made of lipid) is firmly bound to the cell wall (made of peptidoglycan). This structure is responsible for maintaining cell integrity against the turgor pressure faced from the outside. Since this outer layer is more permeable to substances moving across the membrane, the next layer - the inner membrane - also adds support to withstand turgor pressure. It will not let an osmolyte (such as sucrose) diffuse through it, thereby maintaining the osmotic pressure in the periplasmic space.
Hope that answers the question, have a great day!
Question 5 (1 point)
What best describes the role of transpiration in plants?
Producing food molecules
Capturing the energy in sunlight
Maintaining water balance
Breaking down food molecules
Answers
Answer:
maintaining water balance
Di a que tipo de órganos pertenecen las siguientes estructuras. Justifica tu respuesta:
La pata de un pato y la aleta de un pez.
La aleta de una ballena y el brazo del ser humano.
La pelvis reducida de los cetáceos.
Answers
Answer:
La pata de un pato y la aleta de un pez son en ambos casos son elementos que les permiten tanto al pato como al pez moverse, además de sus funciones de estabilidad. La aleta de una ballena y el brazo del ser humano, sucede lo mismo que en el caso anterior. En el caso de la aleta de la ballena, es como la aleta del pez. En cuanto al brazo del ser humano permite realizar movimientos que contribuyen al desarrollo de sus funciones, como por ejemplo, agarrar distintos elementos. La pelvis reducida de los cetáceos no tiene actualmente ninguna función.
Explanation:
La pata de un pato es una extremidad que por su estructura le permita nadar perfectamente. En cuanto a la aleta de los peces y ballenas, es una parte de estos animales formada por tejido conjuntivo. Pueden tener distintos tamaños y su principal función no sólo es permitir el movimiento sino también la estabilidad. En cuanto a la pelvis reducida de los cetáceos era algo que tenía sentido en especies de antaño. Durante la evolución, su utilidad de fue perdiendo, como podría mencionarse el ejemplo en los humanos de las muelas de juicio.
Las estructuras mencionadas pertenecen a los sistemas locomotores de animales acuáticos y mamíferos terrestres.
Explanation:La pata de un pato y la aleta de un pez pertenecen al sistema locomotor de animales acuáticos. Estas estructuras se utilizan para moverse en el agua.
La aleta de una ballena también forma parte del sistema locomotor de animales acuáticos. Permite a la ballena nadar y desplazarse en el agua.
El brazo del ser humano pertenece al sistema locomotor de los mamíferos terrestres. Se utiliza para realizar movimientos y tareas.
La pelvis reducida de los cetáceos es un vestigio evolutivo que indica su pasado terrestre. Aunque ahora vivan en el agua, los cetáceos descienden de mamíferos terrestres y su estructura pélvica es un remanente de ese pasado.
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Which characteristics accurately describe most reptiles? Check all that apply. are invertebrates are ectotherms have external fertilization lay eggs have a three-chambered heart
Answers
Answer:
2.are ectotherms
4. lay eggs
5. have a three-chambered heart
Explanation:
they my corrected answers
Answer:
B D E
Explanation:
During the course of an E. coli transformation laboratory, a student forgot to mark the culture tube that received the kanamycin-resistant plasmids. The student proceeds with the laboratory because he thinks that he will be able to determine from his results which culture tube contained cells that may have undergone transformation. Which plate would be most likely to indicate transformed cells?
Answers
Answer:
The plate that contains Kanamycin in it will have growth of colonies of bacteria that have been transformed with the plasmid which has the kanamycin-resistant gene. The bacterial cells that did not get transformed with this plasmid will not be able to grow into colonies in the presence of kanamycin.
While the negative control, a plate with any other antibiotic,such as ampicillin or tetracyclin, added to it will not allow growth of any bacteria on it.
Hope that answers the question, have a great day!
Final answer:
The plate that would be most likely to indicate transformed cells is the plate containing the antibiotic ampicillin.
Explanation:
The plate that would be most likely to indicate transformed cells is the plate containing the antibiotic ampicillin. In the presence of the ampicillin-resistant plasmids, the transformed cells will be able to grow on the plate while the non-transformed cells will not. By comparing the growth on the ampicillin plate to the growth on the other plates, the student can determine which culture tube contained the transformed cells.
why is it inportant for the cells in your body to go through the cell cycle
Answers
Answer:
It is important for cells to go through the cell cycle so that the organism can survive, heal, grow, and develop.
Explanation:
The cell cycle is the division of old cells to form two new daughter cells. Faor example, if a hamster sustained an injury, healthy cells would need to divide to make up for the cells that were damaged or killed in the injury.
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Use the drop-down menus to select the storm that causes each environmental hazard.
Flash flood
Storm surge
Answers
Answer:
1. Thunderstorm
2. hurricane
Explanation:
Answer:
thunderstorm, hurricane
Explanation:
he or she above is right
Which of the following statements describes how antibody-binding brings about the removal of antigens? A. Antibodies directly lyse cells expressing foreign antigen, thus removing the antigen. B. Antibodies tag antigens for destruction, either via phagocytes or via complement activation. C. Antibodies directly hydrolyze antigens, destroying them. D. Antibodies bind to antigens and hasten their removal through the kidneys.
Answers
Answer:
B. Antibodies tag antigens for destruction, either via phagocytes or via complement activation.
Explanation:
Antigens are proteins found at the surface of pathogens and causes diseases. Antibodies have Y-shaped that fights off the antigen.
As the antigen enters , the body produces antibodies against the particular antigen. Lymphocyte (white blood cell) recognises the foreign molecules called antigen and produces antibodies. Each antibody has unique binding site for specific antigen like lock and key.
The antibodies then binds to the antigen and destroy the antigen via phagocytes or via complement activation.
why is rice grown in clayey soil not in black soil
Answers
Answer: can you help me plz and I’ll help you?
Explanation:
Rice is grown in clayey soil as it retains water well, which is crucial for rice's underwater breathing ability and maintaining wet, anaerobic conditions required for optimal growth.
Rice is commonly grown in clayey soil because it has the ability to retain water, which is essential for the wet rice agriculture. Unlike other grains, rice can breathe underwater, and the water acts as a temperature regulator, weed controller, and a dissolver of nutrients such as nitrogen and inorganic salts, making them more accessible to the rice plants. The use of clayey soil in growing rice is beneficial as it does not require fallowing, which means the soil does not need to be left unseeded for a season to rebuild nutrients. On the contrary, extended rice cultivation in the same area can increase the soil's nutrient content since water and roots pull minerals from deep layers of the earth.
Black soil, however, is not as suitable for rice cultivation. Although black soil is known for retaining moisture and being rich in nutrients, it may not provide the same consistent wet conditions that clayey soils do for the rice paddies. Moreover, rice agriculture thrives in flooded conditions which create anaerobic environments similar to natural wetlands, and these conditions are optimally sustained in clayey soils. Black soils might be more suitable for crops that do not require such heavily flooded conditions.
Which of the following features is not universally accepted as a sign of physical attractiveness? A. facial symmetry B. a curvy figure C. average body type D. average features Please select the best answer from the choices provided A B C D
Answers
Answer:The answer is B.curvy figure
Explanation:
A curvy figure is not a universally accepted sign of physical attractiveness. Therefore option “B” is correct.
What is physical attractiveness?It is the measure of the degree to which a person can look and aesthetic pleasing. Facial symmetry and sociocultural and personal choices of a person are evaluating factors.
Facial symmetry is based on the symmetry of the face of a person and youthfulness. It helps in determining the beauty of a person.
Sociocultural depend on how a person combines both social and cultural factors. Factors affecting are such as personal beliefs, and values. Personal choices vary from person to person as everyone has different choices.
Physical attractiveness is the evaluation of the physical appearance of a person.
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The image below shows part of an ocean current in the Atlantic Ocean. The blue line represents the motion of deep, cool water. The red line represents the motion of warm surface water.
One factor that affects ocean currents is the concentration of salt in the water. How can the saltiness of the water cause the surface water to sink, as shown above?
A.
When cold water rises to the surface, it loses salt.
B.
When ice melts, it makes the surface water less salty.
C.
When the surface water is heated by the Sun, it dissolves more salt.
D.
When some of the surface water freezes, the remaining water becomes saltier.
Answers
Answer: the answer is "when some of the surface water freezes, the remaining water becomes saltier."
Explanation:
In the summer squash, Cucurbita pepo, the fruit is normally disk-shaped. Two recessive mutations, g (globe) and r, (round), are known in different geographical races of the species, both of which cause fruit to be spherical. In crosses between homozygous g/g and r/r stocks, the F1 is always disk-shaped. However, when these F1 hybrids were interbred, it was discovered that squash plant homozygous recessive at both g and r make fruit that is elongated. What are the genotypes and phenotypes of the F2 from the cross of the F1 hybrids in Question 1?
Answers
Answer:
Let the interbred alleles be represente dy the letters A and B for two genes. Gene A will exist in two alleles, that will icnlude A and g while Gene B exists in two alleles, B and r.
The uppercase alleles are dominant to the lowercase alleles. The interbred long-shaped squash is AABB (aabb) and the true-breeding disk-shaped is ggrr AABB.The F1 offspring are AaBb.
The outcome of interbred of the F1 plants and genotypes and phenotype sof F2 for:
1) the disk-shaped phenotype, an offspring must inherit at least one dominant allele from both genes.
1 ggrr+ 2 Agrr+ 2 ggrB+ 4 AgBr = 9 disk-shaped offspring
2) To get the round phenotype, an offspring must inherit at least one dominant allele for one of the two genes but must be homozygous recessive for only one of the two genes.
1 ggrr+ 1 ggBB+ 2 AArB+ 2 gABB = 6 round-shaped offspring
3) To get the long phenotype, an offspring must inherit all recessive alleles:
1 AABB= 1 long-shaped offspring
Hence, the phenotype and genotype of F2 is is 9 disk-shaped offspring and 1 ggrr+ 2 Agrr+ 2 ggrB+ 4 AgBr; 6 round-shaped offspring and 1 ggrr+ 1 ggBB+ 2 AArB+ 2 gABB; and 1 long-shaped offspring and 1 ggrr+ 1 ggBB+ 2 AArB+ 2 gABB respectively.
While test crosses in pea plants can typically reveal the genotype of an unknown parent, crossing with a homozygous recessive cannot differentiate between homozygous dominant and heterozygous without a larger sample size. Epistasis in summer squash results in a 12 white:3 yellow:1 green phenotypic ratio when WwYy heterozygotes are crossed. The shepherd's-purse plant exhibits a 15 triangular:1 ovoid phenotypic ratio when AaBb plants are crossed.
Explanation:In pea plants, the allele for round peas (R) is dominant to the allele for wrinkled peas (r). When performing a test cross between a homozygous recessive plant with wrinkled peas (rr) and a plant of unknown genotype displaying round peas, and if all resulting offspring have round peas, we cannot conclusively determine if the round pea plant is homozygous dominant (RR) or heterozygous (Rr). This is because both genotypes can produce round pea offspring when crossed with a homozygous recessive (rr) plant. However, if the unknown parent were heterozygous (Rr), the probability of all three offspring displaying round peas is 1/23 because each offspring has a 1/2 chance of inheriting the dominant allele for round peas.
In the case of summer squash exhibiting epistasis, a cross between white heterozygotes (WwYy) for both the W and Y genes produces a phenotypic ratio of 12 white:3 yellow:1 green. Here, the presence of at least one dominant W allele masks the expression of the Y alleles, leading to white fruit regardless of the genotype of the Y gene.
Considering shepherd's-purse plant (Capsella bursa-pastoris), where seed shape is controlled by two genes, A and B, and triangular seeds occur if any dominant allele is present from either gene, the expected phenotypic ratio for a cross between plants that are heterozygous at both loci (AaBb x AaBb) is 15 triangular : 1 ovoid, as there are 15 genotypic combinations that contain at least one dominant allele, and only one genotypic combination that is homozygous recessive at both loci (aabb).
The map shows the distribution of wild boars in the United States. Wild boars are an invasive species to the United States. A map of the United notes showing the distribution of wild boars in dark orange. Wild boars appear most often in Texas, California, and Florida, and along the southern notes. Which of these facts about wild boars is best supported by the evidence provided? Wild boars were brought to the United States by humans. Wild boars have quickly spread through the United States. Wild boars have established successfully in areas with warm climates. Wild boars have a high reproductive rate and no natural predators.
Answers
Answer:
Wild boars have successfully established in areas with warm climates.
Explanation:
As you can see in the description of the map shown in the question above, wild boar, although an invasive species in the USA, settled more easily in Texas, California and Florida, and along the southern notes, which are regions that usually have a climate hot most of the year. This means that wild boars have greater affinities with warm climate regions within the country.
An invasive species is one that is taken to a region where it does not occur naturally. These species can become real pests if the invaded environment does not have natural predators that limit their multiplication.
Answer:
C) on edge 2020
Explanation:
:)
Please use the following case for questions.
You are at your son’s baseball game when another boy’s dad experiences dizziness and nearly faints in the stands next to you. You tell him that you are a paramedic and will walk him to your car where you have your medical equipment. He reports that he has had a headache off and on since he had a tooth extracted four days ago. This evening he is feeling very weak. His blood pressure is normal. When you listen to his heart you note that he has a pronounced murmur. He reports having had rheumatic fever 15 years ago. You examine his fingernails and find one that has tiny petechial hemorrhages under it.
1. Which cardiovascular infectious condition is this?2. What is the most likely causative organism and the route of transmission?3. What the connection, if any with rheumatic fever?4. Why did you look at his fingernails?5. What type of culture would a physcian most likly order and why?
Answers
Answer:
Explanation:
a) the cardiovascular condition is sabacute endocarditis
b) It is caused by a type of streptococcus called streptococcus viridians and transmitted through the opening of the wound
c) rheumatic fever can lead to damage to the heart and this damage allows bacteria to attach itself to the heart. Streptococcus viridians are often caused by bacteria hence there growth can be favorite by rheumatic fever.
d) the nails is used to check the blood stream, and should be check for capillary heamorrhage
e) He would order for BAP- Bacteria Agar plate that is used mostly to classic streptococcal bacteria.
How do air masses form?
Answers
Answer:
Air masses can cover hundreds of thousands of square miles. Air masses are formed when air stagnates for long periods of time over a uniform surface. The characteristic temperature and moisture of air masses are determined by the surface over which they form. An air mass acquires these attributes through heat.
Answer
Air Masses are formed when air stagnates are in the air for a long time over a uniform surface