Answer:
Hemophilia is a sex-linked recessive disorder in which a person's blood do not clots and he can bleed to death even after minor injuries because blood will keep running due to a small cut.
It is a recessive trait which means that even if one normal gene is present along with Hemophiliac gene, the person will not have the disease and he will be the carrier.
Question: What will be their children’s possible phenotypes?
If a woman who is a carrier for hemophilia marries a hemophiliac man, their genotypes can be denotes as :
Here H, indicate normal gene and small h indicate defected (hemophilia) gene.
Parents: XHXh X XhY
Offspring: XHXh : XHY: XhXh: XhY
Phenotype of offspring:
XHXh: The child will be daughter and normal (25 % chances)
XHY: The child will be son and normal (25 % chances)
XhXh: The child will be girl and Hemophiliac (25 % chances)
XhY: The child will be son and Hemophiliac (25 % chances)
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"Bottom-up" (or "data-driven") mechanisms are Group of answer choices
A. mechanisms for which activity is primarily triggered and shaped by the incoming stimulus information.
B. the scientific process in which all claims must be rooted in well-established biological evidence.
C. the process by which researchers seek to develop new theories by paying close attention to the available data.
D. mechanisms for which activity is influenced by thoughts provided by the individual.
Bottom-up mechanisms in psychology refer to processes that are primarily driven by incoming stimulus information, starting from lower-level sensory data and working up to higher-level cognitive functions.
Explanation:The 'bottom-up' or 'data-driven' mechanisms are A. mechanisms for which activity is primarily triggered and shaped by the incoming stimulus information.
This means that information processing starts with the stimuli that reaches our senses and then proceeds to the higher-level cognitive processes. In other words, we begin our perception by witnessing an event and the sensation driving our processing, rather than being directed by prior knowledge or expectation.
On numerous occasions, our brains begin to process data at very fundamental levels and then move on to more complex analytical thinking, which can be signified as bottom-up processing.
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Bottom-up (or data-driven) mechanisms are mechanisms for which activity is primarily triggered and shaped by the incoming stimulus information. These mechanisms operate by processing sensory inputs in a sequential and incremental manner to build a higher-level representation or understanding.
Explanation:Bottom-up (or data-driven) mechanisms are mechanisms for which activity is primarily triggered and shaped by the incoming stimulus information. These mechanisms operate by processing sensory inputs in a sequential and incremental manner to build a higher-level representation or understanding. They are commonly observed in biological systems, such as neuronal processing in the brain or sensory perception. For example, when you touch a hot object, your sensory receptors in the skin send signals to your brain, triggering a cascade of physiological responses to remove your hand from the source of heat.
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What best describes the difference between paracentric and pericentric inversion?
A. the number of genes inverted
B.the number of centromeres inverted
C.the placement of centromeres in the inversions
D.if the inversion is on autosomal of sex chromosomes
Answer:
The answer is B.
Explanation:
Paracentric and Pericentric Inversions both are terms used to describe the action of inversing a part of the chromosome. But the main difference between the paracentric and pericentric inversions is that pericentric inversion, unlike the paracentric inversion, does include the centromere in the inversion process. So the answer is B, which is zero for paracentric inversion.
I hope this answer helps.
The main difference between paracentric and pericentric inversions is the option c. involvement of the centromere. Pericentric inversions can change the relative lengths of the chromosome arms.
The involvement of the centromere is the primary distinction between these two types of inversions. Paracentric inversions do not include the centromere because they take place outside of it.
This indicates that the positions in relation to the centromere remain unchanged and that the inversion is restricted to just one arm of the chromosome.
Conversely, pericentric reversals incorporate the centromere inside the upset fragment. Because of this, the relative lengths of the chromosome arms above and below the centromere can change in a pericentric inversion, making these inversions easy to spot.
Based on what we know about meadow voles (i.e., they do not form pair-bonds and have multiple mating partners), which peptide hormone receptor would you expect to show decreased levels in promiscuous human males in comparison to monogamous human males? (Assume here that voles and men have similar receptor distributions.)
Answer:
Vasopressin.
Explanation:
Vasopressin hormone also known as anti-diuretic (ADH) hormone that regulates the tonocity of the body and maintains the fluid composition. This hormone is released from the posterior pituitary.
The vasopressin is a peptide hormone that plays an important role in the human beings. The promiscous males have multiple sexual partner and this decrease the amount of vasopressin in these males as compared with the monogamous males as vasopressin also regulates the sexual function in humans.
Thus, the answer is vasopressin.
A classic example of selection in natural populations involves the peppered moth Biston betularia in England. Industrial gases killed the lichens and mosses on buildings, trees, etc., and soot deposited on the landscape. Dark-colored moths gained a selective advantage. In this case, one would say that there was selection against the light-colored moths. Which morph, light or dark, would have the highest fitness? (Enter light or dark in the box below.)
Answer:
Dark colored moth
Explanation:
Moths either dark or light live on the bark of the trees. During industrial revolution in England, excessive pollution caused the darkening of bark of trees. Due to this environmental change, some of the light colored moths evolved and turned into dark colored moths. Both bark and moth being dark in color, made the moths untraceable by their predators. While the light colored moths on dark trees were easily recognizable by their predators.
Hence, the dark colored moths possess high fitness.
Concerning comb shape in chickens, which of the following is true? Multiple Choice
The R gene is dominant to the P gene.
The R and P must both be present to produce a walnut comb.
R is recessive to r and produces a rose comb.
P is recessive to p and produces a single comb.
Answer:
The R and P must both be present to produce a walnut comb.
Explanation:
Comb shape in chickens is an example of intergenic interaction. Two genes R and P come together to determine the type of comb.
If R is present in dominant form and p in recessive form ( R_pp ) : Rose combIf P is present in dominant form and r in recessive form ( rrP_ ) : Pea combIf both R and P are present in dominant form ( R_P_ ) : Walnut combIf both r and p are present in recessive form ( rrpp ) : Single combHence, it is clear that both R and P must be present to produce a walnut comb.
Where simple sugars are broken down into carbon dioxide, water vapor and atp ogranelle?
Answer: Mitochondria
Explanation: Mitochondria is an organelle responsible for cellular respiration which is the break down of Simple sugars into carbon dioxide,water,ATP( adenosine trisphosphate).
It has a double membrane,known as the power House of the cells found in the cytoplasm of most Eukaryotic organisms.The number of Mitochondria found in an organism varies according to the Oxygen requirements of that organism. In human liver contains about 2000 Mitochondria,the Red blood cells do not contain Mitochondria.
During the year, Cheng Company paid salaries of $23,500. In addition, $9,500 in salaries has accrued by the end of the year but has not been paid. The year-end adjusting entry would include which one of the following?
Answer:
salary accrued and not paid for $9,500.
Explanation:
Accrued salaries usually implies to the amount of liability left over at the end of the year or usually a reporting period for salaries that have been earned by employees but have not been paid. This data information can be used to forecast the residual compensation liability of a business at a particular period.
Year end adjusting entry for Cheng Company will include salary accrued and not paid for$9,500.
Adjusting Journal entry will be ;
Salaries expense $9,500.
Salaries expense payable $9,500.
Increased vasoconstriction has an important role in which of the following situations?A. Causing the decrease in blood pressure associated with faintingB. Increasing blood flow to muscle during exerciseC. Increasing blood flow to skin during blushingD. Maintaining blood pressure during a hemorrhage
Answer:
D. Maintaining blood pressure during a hemorrhage
Explanation:
Vasoconstriction is the narrowing of the blood vessels that results in the reduction of blood flow, the resistance of blood increases and the blood pressure goes up. This process is helpful to stabilize blood pressure and to prevent the loss of blood (hemorrhage).
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Which sequence correctly increases complexity in the level of biological organization?
a. atoms, molecules, cells, tissues, organs
b. molecules, atoms, cells, organs, tissues
c. atoms, molecules, cells, organs, tissues
d. atoms, molecules, organs, tissues, cells
e. atoms, molecules, tissues, organs, cells
The correct sequence of increasing order of complexity in the level of the biological organizations is option a. atoms, molecules, cells, tissues, organs.
At the biological organization, there are many different levels of organization within organisms, in this case, the level is based on smaller and basic building blocks and becomes more complex in increasing order.
Atoms are the smallest unit of the organization and least complex level of the biological organization;Molecules are more complex than atoms but least complex to cells as various types of molecules form cells.the cell is the basic building unit of every living organism.A group of the same type of cells performs the same function together to form tissuesWhen tissues aggregate or are organized to form a structure it is called organs which is the most complex among given options.Thus, the correct answer is option a. atoms, molecules, cells, tissues, organs.
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Final answer:
In biological organization, complexity increases from atoms to molecules, then to cells, tissues, and finally organs; hence, the correct sequence is 'a. atoms, molecules, cells, tissues, organs'.
Explanation:
The hierarchy of biological organization defines the ascending levels of complexity in living organisms, starting from the simplest building blocks and moving up to the entire biosphere. To correctly increase complexity in the level of biological organization, one would start with atoms, which combine to form molecules. These molecules are the building blocks for cells, which are the basic units of life. Cells organize into tissues, which then work together to form organs, each with its specialized function. Therefore, the correct sequence for increasing complexity in biological organization is 'a. atoms, molecules, cells, tissues, organs'.
During the germinal period, the first task of the zygote's outer cells is _____.a. germinationb. implantationc. differentiationd. duplication
Answer:
Implantation. (Ans. B)
Explanation:
Implantation is defined as the stage of pregnancy where the embryo stick to the wall of uterus. This parental development stage, the conceptus is known as the blastocyst. With the help of this adhesion embryo receives nutrients, and oxygen from the mother, and are able to grow.
In the case of humans, implantation of the fertilized ovum chances occurs around 9 days after the process of ovulation, and this can range between 6-12 days.
Which physical change always happens to both the male and female body during puberty?
A. muscle development
B. increase in perspiration
C. increase in body fat
D. formation of eggs
Answer:
The answer is letter B, increase in perspiration.
Explanation:
Puberty- this refers to the process in which children experience physical change in their body as a sign of maturity. Both boys and girls experience such a change in their body due to hormones that are being released. Boys' puberty occurs between ages 12 and 16, while girls' puberty occurs between ages 10 and 14. Girls and boys have different signs of physical change when it comes to puberty, but they also have something in common such as having an increase perspiration or sweating due to having active sweat glands. The sweat glands become active at this stage.
Letter A, muscle development: this occurs in boys. This is due to the male's testosterone hormone.
Letter C, increase in body fat: this occurs in girls. This is due to the female's estrogen hormone.
Letter D, formation of eggs: this occurs in girls.
Describe three ways that preserving biodiversity can come into conflict with human interests.
Answer:
1. Most of the endangered organisms may represent a source of income.
2. The conservation or preservation may conflict with morals.
3. The role of the species or organisms might not be understood.
Explanation:
Biodiversity simply means the amount or number of living organisms that exist in the world.
The practice of protecting these existing living organisms for specific known purposes is regarded as the preservation or conservation of biodiversity.
This process or practice of preserving biodiversity is important to meet most of the human needs, such as generating income, source of food and fuel among others.
Human interests have always come into conflict with preservation of biodiversity.
Biodiversity refers to the different species of plants and animals on earth. Human interests have always come into conflict with preservation of biodiversity in many ways such as;
Use of land for agriculture:The quest for more food production due to population explosion has warranted the conversion of many natural habitats into agricultural land thereby displacing the plants and animals that originally occupied the habitat ultimately leading to loss of biodiversity.
Use of land for infrastructural development:The need for building infrastructure such as schools, hospitals, housing units and road construction often involves the destruction of habitats of plants and animals and a consequent loss of biodiversity.
Continuous exploitation of resources:The continuous quest for more timber has led to the disappearance of many species owing to deforestation. Also, many rare species of animals are becoming extinct because they are required in large numbers for different purposes.
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For every kilogram of their body weight, babies need about three times as much proteins as adults. What could be the reason for this? a) Their body must get used to eating proteins. b) Their bodies are growing rapidly and building new protein tissues. c) Proteins help their bodies to get adjusted to food other than mother's milk. d) Their bodies waste more proteins because they cannot digest protein properly.
Answer:
B) Their bodies are growing rapidly and building new protein tissues.
They are essential for the formation of all organ systems, including bones and muscles, as well as the maintenance and repair of important tissues. Thus, option B is correct.
What is role of protein in the body?You need protein in your diet so that your body can repair damaged cells and generate new ones. Children, teenagers, and expectant women all require protein for healthy growth and development.
The body's proteins also serve as hormones, immunological components, enzymes, and cellular messengers.
The form and internal organization of cells, the production of products and the removal of waste, as well as normal maintenance, are all carried out by proteins.
Additionally, proteins take in external signals and activate cellular responses.
Therefore, Their bodies are growing rapidly and building new protein tissues.
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Flower color in snapdragons is an example of incompletedominance. When a red-flowered plant is crossed with a white-flowered plant, the F1 generation has pink flowers. If a pink-flowered plant is crossed with another pink-flowered plant, theprogeny plants will be _____.
A. 100% pink
B. 100% red
C. 25% red, 50% pink, and 25% white
D. 50% pink and 50% red
E. 25% white and 75% red
Which of the following is most likely to be true of a person diagnosed with schizophrenia?
a. The person feels constantly nauseous.
b. The person's experiences are triggered by external stimuli.
c. The person has impairments in sexual functioning.
d. The person is likely to exhibit catatonic behavior.
Final answer:
The most likely characteristic of a person with schizophrenia from the given options is catatonic behavior, which is a recognized symptom of the disorder, manifesting in immobility or frenzied activity.So,option d. The person is likely to exhibit catatonic behavior is correct.
Explanation:
Among the options given, the one that is most likely to be true of a person diagnosed with schizophrenia is (d) the person is likely to exhibit catatonic behavior. Schizophrenia is associated with a range of symptoms including positive symptoms like hallucinations, delusions, derailment, disorganized behavior, inappropriate affect, and catatonia. Negative symptoms can also occur, such as social withdrawal, poor problem-solving abilities, and a distorted sense of time.
Catatonia can manifest in schizophrenia as a motor disturbance where the person does not move and is unresponsive to others. This condition ranges from complete stillness and lack of response to the individual's environment to seemingly random and frenzied activity. Catatonic behavior is a known and significant symptom that can occur in those with schizophrenia.
Given the following genotypes for two parents, AABBCc × AabbCc, assume that all traits exhibit simple dominance and independent assortment. What proportion of the progeny of this cross will be expected to phenotypically resemble the first parent with the genotype AABBCc?
Answer:
When all the conditions cit e in the question is applicable, which are the independent assortment and simple dominance, a cross between these two parents will lead to an expectation of 75% of the progeny to resemble the parent with a genotype AABBCc.
Explanation:
Independent assortment is a phenomenon in which the alleles particular for a trait in an organism can separate into two independently to each other during the process of meiosis, while simple dominance is a term that help to express the occurrence of both dominant and recessive allele for a particular trait, where the presence of at least one of the dominant allele will lead to the expression of the trait. Having known the meaning of these conditions, we then apply it to solving the question.
Parent 1's genotype=AABBCc
Assorted alleles to be produced=ABC and ABc.
Parent 2's genotype=AabbCc
Assorted alleles to be produced=AbC, Abc, abC, abc.
Crossing these alleles using the punnets square will lead to: AABbCC, AABbCc, AaBbCC, AaBbCc, AABbCc, AABbcc, AaBbCc, AaBbcc. Which have a genotypic ratio of=1AABbCC: 2AABbCc: 1AABbcc: 1AaBbCC: 2AaBbCc: 1AaBbcc. What is expected from the question is phenotypic ratio which is 6ABC, and 2ABc. Therefore, the percentage of those that will resemble the first parent will be 6/8 X 100 = 75%.
Approximately 37.5% of the offspring from the given parental cross (AABBCc × AabbCc) would be expected to phenotypically resemble the parent with the genotype AABBCc. This is due to the principles of dominance and independent assortment in genetics.
Explanation:First, it's important to note that the parents' genotypes are AABBCc and AabbCc. Each parent can only pass on one allele for each trait to their offspring, which is selected randomly. For the offspring to phenotypically resemble the first parent (AABBCc), they need to inherit dominant alleles for the first two traits (A, B) and either of the alleles for the third trait (C or c, as it has the condition of simple dominance).
Let's calculate the likelihood for each trait separately. For the first trait, only the dominant allele A exists in both of the parents, so the offspring will definitely inherit this allele. The probability here is 1 or 100%. For the second trait, only the first parent carries the dominant allele B, so the chance of the offspring inheriting this allele is 1/2 or 50%. For the third trait, both the parents contain the dominant allele C, so it is likely for the offspring to inherit dominant allele. The probability here is 75%.
To get the combined probability, we multiply all of these probabilities together: 1 × 0.5 × 0.75 = 0.375 or 37.5%. Therefore, approximately 37.5% of the progeny of this cross will be expected to phenotypically resemble the first parent with the genotype AABBCc.
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Phoebe is taking samples to determine the populations of aquatic life in different areas of a lake. She takes samples from different areas of the lake and finds the marine life listed in the chart below. What can Phoebe infer from the data in the table?
Location 1
Location 2
Location 3
Location 4
Insects
13
20
18
15
Crawfish
8
15
20
22
Fish
3
11
13
12
Other
5
2
8
4
A. Location 1 has a larger food source than location 4.
B. Location 3 gets more sunlight than location 2.
C. Crawfish prefer the food source at location 4.
D. Fish prefer the food source at location 1.
Answer:
I believe it is C. Crawfish prefer the food source at location 4.
Explanation:
According to the data given in the table, Phoebe can infer that Crawfish prefer the food source at location 4. Thus, the correct option for this question is C.
What is Population?A population may be defined as a group of individuals belonging to the same species living in the same area at a given time. The size, abundance, birth rate, death rate, density, dispersal, etc. are some of the characteristics of the population. These characteristics are also known as demographic factors.
The number of crawfish is found to be more at location 4 as compared to other locations. This illustrates that the Crawfish prefer the food source at location 4 which leads to enhancing the relative fitness of the crawfish at that location due to the availability of their favorite resources.
Therefore, Phoebe can infer that Crawfish prefer the food source at location 4. Thus, the correct option for this question is C.
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When a trait is expressed as a continuum or range of measurements, that trait is most likely to be: completely dominant incompletely dominant caused by multiple alleles caused by multiple genes
Answer:
completely dominant
Explanation:
a trait is said to be completely dominant when it manifests its character continuously from generation to generation respective of other genes.
Carlos avoids _____on the ingredient list of packaged foods because he has celiac disease.
Answer:
wheat, rye, and barley
Explanation:
Celiac disease is a type of an immune disorder in which a person is unable to eat food that contains gluten because it can lead to the destruction of their small intestine. Gluten is a type of protein that is found in several ingredients such as wheat, rye, and barley. Consumption of gluten can lead to the development of inflammation in the small intestine which after a certain time can lead to its destruction. The various symptoms associated with the disease include bloating, diarrhea, anemia, etc.Since Carlos has celiac disease he has to avoid wheat, rye, and barley.Cellular respiration is the set of metabolic reactions that occur in cells to produce energy in the form of ATP. During cellular respiration, high energy intermediates are created that can then be oxidized to make ATP. During what stage are these intermediates produced?
The question is incomplete. The complete question is:
Question: Cellular respiration is the set of metabolic reactions that occur in cells to produce energy in the form of ATP. During cellular respiration, high energy intermediates are created that can then be oxidized to make ATP. During what stage are these intermediates produced?
a. Glycolysis
b. Oxidative phosphorylation
c. The citric acid cycle
d. Oxidative phosphorylation and citric acid cycle
e. Citric acid cycle and glycolysis
Answer:
e. Citric acid cycle and glycolysis
Explanation:
During the citric acid cycle and glycolysis, NAD+ and FAD+ serve as electron acceptors and are reduced into NADH and FADH2 respectively. The breakdown of one molecule of glucose into pyruvate by glycolysis forms a total of 2 NADH. Oxidation of pyruvate into acetyl CoA in the mitochondrial matrix is catalyzed by enzyme pyruvate dehydrogenase and forms one NADH per pyruvate. Complete oxidation of acetyl CoA into CO2 and H2O by citric acid cycle forms a total of 6 NADH and 2 FADH2.
Therefore, the citric acid cycle and glycolysis stores the energy released by the breakdown of glucose into NADH and FADH2. Oxidation of these reducing powers by the electron transport chain generates the electrochemical gradient which in turn drives ATP synthesis.
Which of the following types of neurons are replaced throughout adult life?
A) retinal ganglion cellsB) auditory outer and inner hair cellsC) retinal bipolar cellsD) olfactory receptor cells
Answer:
D) olfactory receptor cells
Explanation:
The olfactory receptor neurons are located in the nasal cavity, they have dendrites that go all the way to the mucus. In vertebrates the olfactory system has the parcularity of performing neurogenesis and the replacement of degenerating receptor neurons through all the adult life.
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Trypsinogen is split by the enzyme enterokinase to form an activated molecule of the protease trypsin. Which of the following would confirm that the activation of trypsin is an example of how a positive feedback mechanism can amplify a biological process?
Trypsinogen is split by the enzyme enterokinase to form an activated molecule of the protease trypsin. Which of the following would confirm that the activation of trypsin is an example of how a positive feedback mechanism can amplify a biological process?
A. The activated trypsin enzyme can use enterokinase as a substrate
B. The trypsin produced by the reaction is capable of splitting and activating additional trypsinogen molecules
C. If levels of trypsin were to get too high, the trypsin molecules would inhibit the enzyme enterokinase
D. Each mRNA molecule that codes for trypsinogen can be translated repeatedly to form many peptide molecules
Answer:Trypsinogen molecules are first split into the active enzyme Trypsin by enterokinase. Then the Trypsin being a protease itself, works on Trypsinogens and converts them to Trypsin. Thus this is a positive feedback.
Option B
Explanation:Trypsinogen is a proenzyme which is secreted by pancreas into the duodenum. Enterokinase is a intestinal enzyme that is secreted from the small intestinal glands. Enterokinase works on the Trypsinogens to convert them into trypsin by splitting a peptide chain from the proenzyme. This trypsin then digests a variety of proteins and peptides from diet.
Trypsin is a protease and the proenzyme Trypsinogen is a protein. So trypsin works on the secreted trypsinogens too and amplify the production of trypsin from the trypsinogens to enhance the digestion process. Thus, a positive feedback chain is seen here.
3. Primary immunodeficiencies affecting T cells tend to be more severe than those affecting B cells because: A. T cells control the innate immune response. B. T cells regulate antigen presentation. C. T cells regulate the adaptive immune response. D. T cells can trigger apoptosis. E. None of the above.
Answer:
The correct answer is option C.
Explanation:
The adaptive immune is characterized by immunological memory, specificity, and self nonself recognition. These cells are involved in lymphocytes that fight against the specific antigen.
T cells tend to be more severely affected than the B cells by the primary immunodeficiencies however both are the major components of the adaptive immune system.
Thus, the correct answer is option C.
You work hard to pedal your bicycle up a steep hill. You rest when you get to the top, then you let your bicycle roll quickly down the other side of the hill. You converted ________ energy into ________ energy, then you converted it back into ________ energy.
Answer:
Kinetic, potential and kinetic.
Explanation:
Energy helps to do any form of work. Energy can not be created and can not be destroyed. The energy are inter convertible with each other and no energy is lost during this process.
Two main types of energy are potential energy and kinetic energy. Potential energy is present in rest objects whereas kinetic energy is possessed in moving objects. On pedaling a bicycle kinetic energy is used. Dying rest this energy is converted into potential energy and further on rolling of the bicycle requires kinetic energy.
Thus, the answer is kinetic, potential and kinetic.
using mendel's flower color purpple is dominant, white is recessive, if two heterozygous plants are crossed, what is the probability that the first two offspring will have purple flowers____________.
The probability that the first two offspring will have purple flowers is 3/4 or 75%.
Explanation:The probability of the first two offspring having purple flowers can be determined using Punnett squares, which are a tool used in genetics to predict the outcome of a cross between two organisms. In this case, both parents are heterozygous, meaning they have one dominant allele for purple flowers (P) and one recessive allele for white flowers (p).
When we cross two heterozygous plants, there are four possible combinations of alleles in the offspring: PP, Pp, Pp, and pp. Since purple (P) is dominant over white (p), the only way for an offspring to have purple flowers is if it has at least one dominant allele (P).
Out of the four possible combinations, three have at least one dominant allele (PP, Pp, and Pp). Therefore, the probability that the first two offspring will have purple flowers is 3/4 or 75%.
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There are 35 chipping sparrows and 40 cowbirds in a forest. Female cowbirds are parasites to other bird species like the chipping sparrows. If the chipping sparrow population size suddenly decreased to 15, how would it affect the size of the cowbird population? A. The cowbird population would increase. B. The cowbird population would decrease. C. The cowbird population would go extinct. D. The cowbird population would stay the same.
Answer:
The correct option is B) The cowbird population would decrease.
Explanation:
A decrease in the population of chipping sparrows will lead to limited food resources for female cowbirds as they feed on the chipping sparrows. Due to this, the cowbirds will compete with each other for food as food resource will become limited. The competition might be intraspecific or interspecific if other species also fed on the chipping sparrows. As a result, the population of the chipping cowbirds will also decrease.
TRUE/FALSE
The antiparallel arrangement of double-stranded DNA is due to the phosphate group being bonded to the 3' carbon on one strand and the 5' carbon on the complementary strand.
Answer:
False
Explanation:
A double-helical DNA molecule consists of two DNA strands. A DNA strand has free 5' phosphate at one end and a free hydroxyl group (OH) at its 3' end. A DNA double helix is said to be antiparallel since each end of the double helix has an exposed 5' phosphate on one strand and a free 3' hydroxyl group (OH) on the other. This means that the two DNA strands run in opposite directions. A phosphate group is always esterified to the 5' carbon of the pentose sugar; never at its 3' end.
What are the three sections of the large intestine and what roles does each play in digestion or absorption?
The colon, rectum, and last part of canal are all parts of the large intestine. As food approaches the end of its journey through your digestive system, it continues in one continuous, lengthy tube from the small intestine.
What is alimentary canal?The digestive system's path from the mouth to the rectum is known as the gastrointestinal tract. Food digestion takes place in the alimentary canal.
The muscular tube known as the intestine (bowel) runs from the stomach to the anus. Food digestion is its primary function.
The colon is divided into three sections: the transverse colon, which absorbs fluids and salts, the ascending colon, which retains waste, and the descending colon, where bacteria aid in the digestion of any leftover food. The rectum, which houses the faces, is the last segment of the large intestine.
Thus, the three sections of large intestine are colon, rectum, and opening of rectum.
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A rubella vaccination is ordered for a client. Which statement made by the client is cause for concern?
" I have been trying to conceive a baby for a few months."
"I have plans to have a baby by next year."
"I have no history of rubella in childhood."
"I have plans to get married by the next year."
Answer:" I have been trying to conceive a baby for a few months."
Explanation:
If she is pregnant, the virus can be passed to the foetus which can cause deafness and some other negative effects to the foetus.
in flowering plants plasmodesmata are narrow channels through cell walls that connect the cytoplasm of adjacent
Answer:
In flowering plants plasmodesmata are narrow channels through cell walls that connect the cytoplasm of adjacent CELLS AND ALLOW SMALL MOLECULES TO MOVE FREELY BETWEEN THE TWO CELLS.
Explanation:
Plasmodesmata are tiny channels which functions as intercellular cytoplasmic links and pathways, to ease communication and transport of materials between the cytoplasm of adjacent cells.
It permits intercellular passage of water, certain nutrients, and other molecules to pass from one plant cell's cytoplasm to an adjacent plant cell's cytoplasm.