Answer:
Apoximis or asexual seed formation
Apoximis is when a seed will be produced that can turn into a genetically identical plant.
Explanation;
Asexual reproduction is the type of production that results to offspring or organisms that are genetically identical to the parent plant. In plants, plants can reproduce asexually through vegetative reproduction or apomixis, without fertilization of gametes.
Apomixis is where some plants can produce seeds without fertilization. This occurs when an ovule or part of the ovary gives rise to a new seed.
Using the image below, match items A, B, C, D, and E with the correct term.
Answer:
A. Hydrogen Bond
B. Adenine
C. Guanine
D. Thymine
E. Cytosine
Explanation:
The double helix is held together in the middle by hydrogen bonds that connect the different bases together. There are 4 bases that make up a DNA, guanine, cytosine, thymine and adenine. Each base pairs up with a specific base because each of them have a distinct shape. Adenine matches up with Thymine, while Guanine matches up woth Cytosine.
Your biology teacher has asked you to do the impossible! You must measure the diameter of one algal cell. You are about to turn in a blank lab report when your friend Mel comes along and says it is an easy task. First he shows you how to compute the diameter of your field of view. At 40X, your field of view is .50 mm or 500 um. If you look carefully you count 15 algal cells spanning the field of view.
The diameter of one algal cell is approximately
Answer: The answer is 33.3 .......D .....as just divide 500 by 15.....so you get the answer !!!
Answer: D. 33.3 um
Explanation: usatestprep approved
Which skin layer adds cushion?
epidermis
dermis
fatty tissue
I would say the best answer would be Fatty tissue because the epidermis is the outer layer of skin and the dermis is under this epidermis but it is the connective tissue. Let me know if that's right then.
~Keaura/Cendall
Noah wants to show the largest source of carbon on Earth for his school project. According to his research, in which form is most of the carbon on Earth stored?
I'm not sure what they exactly mean by "form" but,
Most carbon is stored in the ocean in sediments. These sediments and rocks develop from the hard shells and body parts of marine organisms that have absorbed the carbon in the water. When they die, their bodies sink to the ocean floor, and the hard parts break down into sediment, which later are formed into sedimentary rocks.
When in contact with water that is acidic carbon dissolves and will precipitate out as sediment such as calcium carbonate (limestone). This cycling between solution and precipitation is the background against which more rapid parts of the cycle occur.
So, it should be sediments, but it could also be calcium carbonate..
Answer:
The majority of carbon is present in the dissolved state in the ocean and in the limestone rocks on the ocean floor.
Explanation:
Carbon is one of the main greenhouse gas that is emitted mainly from the volcanic eruptions and burning of fossil fuels. Some amount is released by the living organisms during respiration.
This carbon is then transported from the atmosphere to the lithosphere through the rainfall (precipitation). This atmospheric carbon when reacts with the water, it forms a weak acid which is commonly known as Carbonic acid. This acid-containing water reacts with water undergoing chemical weathering releasing ions such as, calcium, magnesium, sodium, which are further carried bu the rivers to the oceans.
These calcium ions then react with bicarbonate ions, thereby forming calcium carbonate. In addition to this, they are also formed by organisms that are comprised of hard shells. These organisms when they die, they sink and accumulate at the bottom of the ocean floor. With the increase in time, these shell layers combine with sediments forming carbonate rock called limestone in which the carbon is stored.
How many molecules of ATP are produced as a result of the Krebs cycle?
A. 9
B. 1
C. 2
D. 6
Answer:
C: 2
Explanation:
The Krebs Cycle produces two molecules of ATP for every molecule of glucose or sugar.
Answer:
(C). 2.
Explanation:
Krebs cycle can be defined as a cyclic reaction, which involves generation of energy by oxidation of aceyl coenzyme A, derived from complex compounds, such as glucose. In eukaryotes, Krebs cycle takes place inside the mitochondria.
It is used by most of the living cells to generate energy during aerobic respiration. Two molecules of ATP are formed in each cycle of Krebs cycle.
Thus, the correct answer is option (C).
A(n) is formed when groundwater that flows in an aquifer between two layers of
impermeable rock is forced to the surface by an increase in pressure,
O
A artesian well
O
B. aquifer
O
C. spring
O
D. man-made well
Answer:
A. artesian well
Explanation:
The artesian well represents a well that is pumping out water on the surface in a natural way, thus not needing any human assistance. The water is coming vertically or diagonally upward toward the surface from an aquifer that lies below it. This happens when there's an aquifer between two impermeable layers of rocks, so when there's new water flowing in it, it can not accumulate it, so the pressure rises and the water is pushed up on the surface where there are the cracks or softer rocks. The artesian wells are relatively common, and they usually are not large, but pump out smaller amounts of water, creating small streams.
(!!FIRST TO ANSWER GETS BRAINLIEST PLEASE HELP!!))
1. A good way for a lizard to conserve its body heat in cold, windy weather would be to
A. Retreat to an underground burrow.
B. bask in the sun on an exposed rock.
C. sit in the shade of a tree.
D. submerge in a pond.
2. An endotherm is an animal that
A. Regulates its body temperature by staying in the sun.
B.Regulates its body temperature by living underground.
C. Regulates its body temperature partly by generating its own body heat.
D. Does not regulate its body temperature.
Answer:
1) B
2) C
Can you Mark me as the Brainliest??
1. A lizard is cold blooded. This means that it rely on its surroundings to regulate it's body temp. Normally if a lizard needs warmth they rely on the sun, but in the cold months in many places the heat from the sun isn't enough to be a counter effect of the cold/wind. Sometimes the sun isn't even out at all. Because of this it will A. Retreat to an underground burrow to keep warm
2. Endotherm animal is another name for warm-blooded (mammals are a great example of endotherm animals). If you think of your self, a human (at least I hope you are...) then you don't have to worry about the external temperature regulating your internal temp. You don't have to stay in the sun to keep warm or live underground (D. is just ridiculous that it should be obvious that it isn't the answer, so I'm not even going to talk about it). Your body, and all other endotherm animals generate their own body heat, therefore the answer is C.
Hope this helped!
What is acid reflex disease? What causes it? What structures of the digestive system are involved?
Answer:
A digestive disease in which stomach acid or bile irritates the food pipe lining. This is a chronic disease that occurs when stomach acid or bile flows into the food pipe and irritates the lining. Acid reflux and heartburn more than twice a week may indicate GERD.Symptoms include burning pain in the chest that usually occurs after eating and worsens when lying down.Relief from lifestyle changes and over-the-counter medications is usually temporary. Stronger medication may be needed.
Answer: One common cause of acid reflux disease is a stomach abnormality called a hiatal hernia. ... But if you have a hiatal hernia, acid can move up into your esophagus and cause symptoms of acid reflux disease. These are other common risk factors for acid reflux disease: Eating large meals or lying down right after a meal.
Explanation: thumbs up
Which part of the cell is semipermeable, or controls what enters and leaves the cell?
A: mitochondrion
B: cytoplasm
C: endoplasmic reticulum
D: cell membrane
This would be D. Cell Membrane
Here is the function of the other organelles in the answer choices in case you didn't know
A. It is the power house and makes/converts the energy of the cell
B. It hold all the organelles in place
C. processes/finalizes protein
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
D) cell membrane
Explanation:
edge. 2020
Do fossils provide a complete record of all the extinct species that lived on Earth? Why or why not?
A. Yes, because all species left fossils behind.
B. Yes, because the traits of many species can be inferred from a single fossil.
C. No, because many species went extinct without leaving fossils behind.
D. No, because fossils break apart after about 65 million year
C no because many species went extinct without leaving fossils behind
Answer:
C. No because many species went extinct without leaving fossis behind.
Explanation:
Not all species will leave fossils and we can't infer things about other species from a fossil of a specific species.
An acid is a(n) _____.
a molecule of other entity that can donate a proton or accept an electron pair in reactions.
Answer:
many scientists have given may definition of an Acid
Bronsted-Lowry theory stated that an acid are the donor of proton and bases are acceptors of a proton.
According to Lewis Acid theory: An Acid is one which can accept an electron to form a covalent bond.
According to Arrhenius Acid: Acid is one in which H⁺ concentration is more than OH⁻
A key difference between green algae and land-based plants is that
Answer:
alge can be unicellular or multi-cellular
land based plants are multi-cellular
Explanation:
Answer:
Algae are a unicellular body found in water while land plants are the multicellular body.
Explanation:
Algae are aquatic organisms with the unicellular body that have the ability to perform photosynthesis. They are not differentiated in leaves, stems, and roots. They found generally underwater.
Land plants are multicellular differentiated into stem, leaves, and roots and connective tissue also found in them.
Thus, the key difference in algae and land plants is that the algae are unicellular while land plants are multicellular.
How are elements that are heavier than hydrogen spread throughout the universe? A. When a star collapses into a neutron star B. When a star forms into a red giant C. When a star collapses as a black hole D. When a star explodes as a supernova
Answer:
D
Explanation:
Supernovae are an explosion of stars, during star death. During the life cycle of a star, it gravitation pull of its core squeezes lighter atoms such as hydrogen into heavier atoms like helium and carbon. When the stars explode in a supernova, these elements are jettisoned out forcefully into outer space even up to speeds of 25,000 miles/second.
Answer:
D. When a star explodes as a supernova elements that are heavier than hydrogen spread throughout the universe.
Explanation:
What happens when pressure in the chest cavity becomes greater than atmospheric pressure
you die....that's what happens....or if you want the more gradic answer than, your chest explodes into a million pieces and your guts go flying everywhere. :)
Subject: Science
Where are Quasars located?
Answer: Astronomers think that quasars are located in galaxies which have black holes at their centers. The black holes may provide quasars with their energy. Quasars are so bright that they drown out the light from all other stars in the same galaxy.
Explanation: from N.A.S.As website
Eyelash length. In eyelash length, long eyelashes (L) are dominant over short eyelashes (l). A person has long eyelashes but also carries a gene for short eyelashes.
Is this person homozygous or heterozygous for this trait?
Heterozygous because one who has a heterozygous gene is referring to one who has two different alleles in 1 gene. Homozygous refers to one who has two alleles who’s characteristics are exactly the same forming a similar but different gene compared to homozygous.
Final answer:
The person with long eyelashes that also carries a gene for short eyelashes is heterozygous, having one dominant allele for long lashes and one recessive allele for short lashes.
Explanation:
The individual described in the question has long eyelashes but also carries a gene for short eyelashes. This indicates that the person has two different alleles for the eyelash length gene: one allele for long eyelashes (L) and one for short eyelashes (l). Therefore, the person is heterozygous for this trait, meaning they have one dominant allele (L) and one recessive allele (l) for eyelash length.
Being heterozygous is like having a combination of alleles for a given gene. In contrast, an individual who is homozygous for a trait would have two identical alleles, either both dominant (LL) for long eyelashes or both recessive (ll) for short eyelashes. Traits can be controlled by one gene or multiple genes, but in the case of eyelash length, we're assuming a single-gene influence.
What is the difference between biotic and abiotic factors?
Answer:
Biotic factors can be described as all the living factors that are present in an environment or ecosystem. Abiotic factors can be described as all the non- living components that are present in an environment or ecosystem. Abiotic factors determine which organisms are capable of surviving in a particular environment. The biotic factors determine the interaction of an organism with other organisms of an ecosystem.
Examples of biotic factors include the plants, animals and humans. Examples for abiotic factors include the sun, water etc.
Final answer:
Biotic factors are the living components of an ecosystem, such as plants and animals, whereas abiotic factors are the nonliving environmental elements like sunlight and temperature. The interaction between these factors is crucial for ecosystem dynamics and the distribution of organisms.
Explanation:
The question addresses the difference between biotic and abiotic factors, which are fundamental concepts in ecology and biology. Biotic factors are the living components of an ecosystem, which include organisms such as plants, animals, bacteria, fungi, and any other living things. These factors interact with each other in various ways, such as predation, competition, and symbiosis. On the other hand, abiotic factors are the nonliving components that influence the living organisms within an ecosystem. These include sunlight, temperature, water, soil quality, and other physical and chemical aspects of the environment.
Abiotic factors often determine the kind of biotic factors that can exist in a particular environment. For example, the amount of rainfall and temperature in an area can influence the soil quality, which in turn affects the types of plants that can grow there. These plants then provide food and habitat for various animal species, illustrating the intricate interactions between biotic and abiotic factors. Such interactions play a crucial role in shaping ecosystems and determining the distribution of life forms across different biomes.
A solid metal can absorb heat from another object through which method of heat transfer?
a.
conduction
b.
convection
C.
radiation
D.
insulation
Answer:
Conduction
Explanation:
Conduction is the method of easily traveling from an object to another.
Answer:
A
Explanation:
conduction
Define the following terms: Homologous structures, Vestigial structures, Analogous structures,
Convergent evolution, Divergent evolution, Speciation, Biogeography, Gradualism, Punctuated
Equilibrium, Coevolution.
How do fossils show evidence of evolution? What can we discover by looking at fossils in laverso
Hi!
I can do Homologous structures and vestigial structures
Homologous structures are similar bone structures in very different species, like whales and bats. We use this to see how we evolved alongside other animals with the same common ancestor.
Vestigial structures are structures we don't need anymore, like our tailbone. We can use these to tell how our ancestors lived and what they needed to survive.
Hope this helps!
Final answer:
Convergent evolution involves unrelated species developing similar traits, while divergent evolution involves related species developing different traits, often leading to speciation. Homologous structures indicate common ancestry, and vestigial structures are remnants of once-functional traits in ancestors. Common misconceptions include misconstruing evolution as unproven, believing it occurs in individuals or has a predetermined direction.
Explanation:
Convergent and Divergent Evolution:
Convergent evolution occurs when unrelated species evolve similar traits due to having to adapt to similar environments or ecological niches. An example is the development of wings in both birds and bats, which both evolved for flight, yet these animals are not closely related. Divergent evolution is the opposite process, where related species evolve different traits. It often occurs when populations of a species become isolated, leading to the development of new species — a process known as speciation.
Homologous and Vestigial Structures:
Homologous structures are body parts in different species that have a similar structure, but not necessarily a similar function, indicating a common ancestry. An example would be the bones in the forelimbs of humans and bats. Vestigial structures are remnants of organs or structures that had a function in an early ancestor but are no longer functional or have reduced function in the modern descendants. The human appendix is a commonly cited example.
Misconceptions About the Theory of Evolution:
One common misconception is that evolution is just a theory and not proven, when in fact, it is a well-supported scientific framework. Another misconception is that individuals evolve, whereas evolution occurs over generations and affects populations rather than individuals. Lastly, evolution is often mistakenly believed to have a predetermined direction or goal, but it is a natural process that responds to environmental pressures without specific end goals.
Which level of biodiversity involves variations within a single population? A)genetic. B)species. C)ecosystem
Answer: The answer would be B) species
Explanation: A single population can have multiple genetic variations, there for this would be a species. Such as a species of bird can have many differences but, it is still a bird.
Genetic biodiversity involves variations within a single population and is essential for adaptation and survival of a species in various environmental conditions.
Explanation:The level of biodiversity that involves variations within a single population is genetic biodiversity. Genetic diversity or variation is the raw material for adaptation in a species, and the future potential for adaptation depends on the genetic diversity held in the genomes of the individuals in populations that make up the species. An example of population variation is the geographic distribution of different phenotypes in a population.
For instance, warm-blooded mammals living near the poles tend to larger compared to those living in the south in order to conserve heat. This type of diversity aids in the evolution and survival of a species in different environments, allowing for a variety of responses to environmental pressures and diseases.
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The endosymbiotic theory provides an explanation for the origin of chloroplasts. Which trait of chloroplasts supports this explanation?
Chloroplasts do not reproduce.
Chloroplasts rely on proteins that are made by the cell.
Chloroplasts are larger than prokaryotic cells.
Chloroplasts have their own DNA.
Answer:
Chloroplasts have their own DNA.- last choice
The trait of chloroplasts that supports the endosymbiotic theory is that they have their own DNA. Hence option d is correct.
What is endosymbiotic theory?The endosymbiotic theory is a scientific theory that explains the origins of eukaryotic cells, which are the types of cells found in plants, animals, fungi, and protists.
According to the endosymbiotic theory, chloroplasts and mitochondria evolved from free-living prokaryotic cells that were engulfed by larger host cells.
Over time, these smaller cells established a mutually beneficial relationship with their hosts, eventually becoming integrated into the host's cellular machinery.
One piece of evidence supporting this theory is that chloroplasts, like mitochondria, have their own DNA, which is circular and similar in structure to the DNA of bacteria.
This suggests that chloroplasts and mitochondria are the descendants of free-living bacteria that were engulfed by host cells and became incorporated into their structure.
Furthermore, chloroplasts, like mitochondria, are capable of carrying out many of the functions necessary for their own survival, including protein synthesis and DNA replication, independent of the host cell.
Hence option d is correct.
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Cytoplasm is the clear, gelatinous material found in cells. The cytoplasm takes up a little more than 50 percent of the volume of animal cells and a smaller volume in plant cells.
Which of the following is a function of cytoplasm? The could be more than one correct
A determines which substances can enter or leave the cell
B contains proteins that aid in cell movement and cell shape
C supports and holds the cellular organelles
D helps materials move from place to place within the cell
E serves as the site of many cellular processes
The cytoplasm is the liquid material covered with the cell membrane, doing all the necessary process within the cell, hence all option is correct.
What is cytoplasm?The cytoplasm is liquid material inside the cell in which all the cellular process is done, except the nucleus all the material inside the cell membrane is known as cytoplasm.
The cytoplasm contains all the proteins which are responsible for cell growth and also maintains the cell in a defined shape, for the movement of a cell from one place to another is also a cytoplasmic movement.
Cellular process glycolysis is held in the cytoplasm of every cell, and another enzymatic process also, cytoplasmic material having a defined concentration of a substance in it, which allows determining which material is in and out.
Therefore cytoplasm does much work inside the cell, hence all options are correct.
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_______ is the branch of biology that classifies living things in a hierarchical system. A. Phylogeny B. Taxonomy C. Molecular biology D. Anatomy
Answer: Taxonomy
Explanation:
It is the branch of science that deals with the classification of living things in a hierarchical system. The word taxis means arrangement so it deals with the proper arrangement of the organism based on their shared characters.
Linnaeus is known as the father of taxonomy who gave a proper method for classifying the living organism.
Taxonomy is the branch of biology that classifies living things in a hierarchical system. Therefore option B is correct.
Taxonomy is the branch of biology that deals with the classification, identification, and naming of living organisms. It involves organizing and categorizing organisms into hierarchical groups based on their shared characteristics and evolutionary relationships.
The primary goal of taxonomy is to create a systematic framework that reflects the diversity of life and allows scientists to study and understand the relationships between different organisms.
Taxonomists use a combination of morphological, anatomical, genetic, and ecological data to classify organisms into different taxonomic ranks, including species, genera, families, orders, classes, phyla, and kingdoms.
In summary, option B taxonomy is the branch of biology that classifies living things in a hierarchical system, providing a framework for understanding the diversity and relationships among organisms.
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Someone please help I promise to mark brianelst!!
Answer:
Diffusion
Explanation:
Answer:
I believe it is diffusion
Explanation:
Diffusion maintains homeostasis most likely like that out of the other options.
PLEASE HELP!!!!
Which action is a reflex action?
A. asking for coffee in a cold climate
B. blinking when light is flashed in the eyes
C. drinking water when thirsty
D. swallowing food
E. taking an exam
Answer:
B blinking when light is flashed in eyes
which organisms are single-celled and lack a nucleus
Answer: Prokaryotes are single-celled organisms that lack a nucleus. They also lack other membrane-bound organelles.
8. How often does Earth's magnetic field change direction?
Answer:
600,000 years
Explanation:
Every 600000 years it changes
Through what process can special interest groups and businesses influence the government?
A- protests
B- lobbying
C-tax payments
D- passing a new bill
Through lobbying special interest groups and businesses can influence the government.
What is lobbying?Lobbying is a useful business tactic for influencing government decision making, particularly for businesses facing threats such as a tax hike or a new policy that could damage their product or service. Lobbying gives businesses a voice to influence the policies and regulations that matter to their business.
Lobbying is the act of attempting to influence business and government leaders to create legislation or conduct an activity that will help a particular organization.
Lobbying is also a much-needed mechanism and method that smoothens the interface between the government and the business. Indeed, without lobbying, there would be a “dialogue of the deaf” wherein the government and the business worlds would be talking within themselves without any meaningful conversation.
The correct answer is option B.
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B. lobbying
Special interest groups and businesses can influence the government primarily through the process of lobbying (option B). Lobbying involves individuals or groups advocating for specific policies, legislation, or regulatory changes to lawmakers and government officials. Lobbyists may engage in various activities, such as meeting with legislators, providing information and research, organizing events, and offering campaign contributions. Through these efforts, special interest groups and businesses seek to shape public policy decisions in their favor, often by promoting their interests or agendas. While protests (option A) can also raise awareness and pressure the government, lobbying is a more direct and organized means of influencing decision-makers. Tax payments (option C) are a requirement for individuals and businesses but do not directly influence government policy. Passing a new bill (option D) is a legislative process that may be influenced by lobbying efforts but is not a method by which interest groups and businesses directly exert influence.
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
11. The most important advantage an adaptation gives a living thing is to help it to survive in order that it
may
a. kill
c. eat
b. reproduce
d. grow
12. Albino (white-haired) deer that are born in forest surroundings will probably
a. survive better
c. be eaten
b. reproduce
d. adapt
13. A trait that makes an individual different from others in its species is
a. a variation
c. an adaptation
b. competition
d. selection
14. A mutation is helpful depending on whether it makes the living thing,
a. larger
c. better adapted
b. smaller
d. another color
15. The theory of evolution by natural selection was developed by
a. Pasteur
c. Darwin
b. Mendel
d. Hooke
Many scientists believe that, over time, the horse changed from a small animal to the large one we know
today. These scientists would say that the horse
a. evolved
c. fossilized
b. cloned
d. did not adapt
Rabbits are rivals for food and shelter. This is an example of
a. selection
c. competition
d. evolution
b. mutation
TITT
17.
IN
"
Answer:
11B (reproduce). 12C (be eaten). 13A (variation). 14C (better adapted). 15C (Darwin). 16A (evolved). 17C (competition).
Explanation:
11 - The key principle underlying evolution by natural selection is that traits are only passed on if the organism survives long enough to reporduce. An adaptation that increases its likelihood of survival will therefore increase the chance it will reproduce.
12 - Deer rely on their brown fur to remain camouflaged in the forest so that predators can't see them. A white deer will stand out and will be seen by predators and eaten.
13 - This is the definition of variation. The variation becomes an adaptation if it actually benefits the organism in some way in its environment. A variation could also be neutral (doesn't affect the organism) or deleterious (bad).
14 - See previous question.
15 - Darwin developed the theory.
16 - This is describing the process of evolution.
17 - This is an example of competition.
Match the changed nucleotide sequences to the mutations that cause them.
The question asks to identify and analyze different types of DNA mutations and predict their effects on the amino acid sequence of proteins. This requires understanding the genetic code and the types of mutations like missense, nonsense, silent, and frameshift mutations, and constructing complementary DNA and mRNA sequences.
The Biology question involves comparing and analyzing various types of mutations by working with changes in DNA sequences and understanding their impact on protein synthesis. This involves several steps, including constructing complementary DNA strands, transcribing template strands to mRNA, and translating the mRNA to determine the resulting amino acid sequences.
Example Answer for Part d (Mutation Types):
Transition at nucleotide 11: This would result in a missense mutation, changing one amino acid in the resulting protein.
Transition at nucleotide 13: Like the first, this is also likely to be a missense mutation, but the effect depends on the specific nucleotides involved and the genetic code.
Single nucleotide deletion at nucleotide 7: This could cause a frameshift mutation, likely altering the entire amino acid sequence beyond the point of deletion.
T to A change at nucleotide 15: Depending on the context in the genetic code, this could be a silent mutation if it does not change the amino acid, a missense mutation if it changes the amino acid, or a nonsense mutation if it creates a stop codon.
Addition of ACC after nucleotide 6: Adding nucleotides can also result in a frameshift mutation, potentially altering the downstream amino acid sequence.
Transition at nucleotide 9: The outcome of this would again depend on the genetic code and could be a silent, missense, or nonsense mutation.
Overall, these mutations reflect different mechanisms by which DNA can be altered, and these alterations can significantly impact the structure and function of proteins synthesized by the cell.