Biotin provides _____ for the pyruvate carboxylase reaction.

Answers

Answer 1
Pyruvate carboxylase is a biotin containing enzyme that catalyse the HCO3 and MgATP dependent carboxylaton of pyruvate to form oxaloacetate. In this reaction biotin is mostly used to provide carboxylation of pyruvate, group transfer from one site of the enzyme to another. It is also used as a long flexible arm for the activesite location of substrates.

Related Questions

DNA replication occurs prior to meiosis and _________.

Answers

Hello,

The answer is option A "mitosis".

Reason:

Mitosis one of the stages of a cell where the cells are separated into two chromosomes therefore putting them into a nucleus. Its not option B because cytokinesis is another part and divides one cell into two daughter cells (which means this is involved of the sex of the child). Its also not D because transcription is involved in gene expression.

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit

Answer:

The answer is mitosis

Explanation:

Why is algae classified in the Protist Kingdom and not the Plant Kingdom even though they are photosynthetic? Research why some scientists feel they should be classified as plants.

Answers

Algae (Euglena) do photosynthesis as plants do. They also move around and eat, as do animals. But they are unicellular. In order to be classified as a plant or animal, an organism has to be multicellular, made of more than one cell. Since it is a unicellular organism with some plant and animal characteristics, it is called a protist. Plant cells have walls while algae does't have one, so it is a protozoan. Algae resemble the protozoa, so they are put into the Protist Kingdom. 

Once absorbed the majority of glucose is transported to

Answers

Answer: Liver

Glucose is the most important fuel source for the body, specifically the brain. It is absorbed through the mucosal lining into the epithelial cells of the intestine by active transport via sodium-dependent hexose transporter. From the epithelial cells, glucose is moved into the surrounding capillaries by facilitated diffusion into the liver. Once in the liver, glucose is stored as glycogen.

Mr. Burns, a retired neighbor of Roger's, is angry at Roger for playing loud music. Roger, who is 9 years old, notices that it is 10:30 AM and decides that Mr. Burns does not like to be interrupted while watching 'The Magic Donkey' superhero program on television, which only comes on during this time slot. Roger decides to do an experiment over the next two weeks and record his findings. To test this hypothesis, Roger could do all of the following EXCEPT?
A)Repeat his behavior at 10:30 AM for the next two weeks and record his findings.B)Bring Mr. Burns his mail at 10:30 every day.C)Play loud music at precisely 2:30 in the afternoon for two weeks.D)Interrupt Mr. Burns at 10:30 AM for the next two weeks by mowing the lawn.

Answers

The answer would be: C)Play loud music at precisely 2:30 in the afternoon for two weeks.

All other option is involving an action at 10.30 AM which the only times  'The Magic Donkey' is aired on the television. If Roger wants to prove the hypothesis, he should do the experiment when  'The Magic Donkey' is aired, not before or after it.

If you were standing under the tree which object would appear to be moving

Answers

the leaves would appear to be moving

Which blood type carries anti-a antibodies in the plasma?

Answers

The blood type B carries anti-A antibodies in the plasma. Blood type B is characterized by the presence of B antigens in the plasma membrane of the red blood cells. With the B antigens present, the opposite (anti-A) antibodies should be present in the plasma. Same goes with other blood types. In blood type A, there is the presence of A antigens on the RBC membrane and anti-B antibodies in the plasma. In blood type O, there are no antigens on the RBC membrane therefore there is the presence of both anti-A and anti-B antibodies in the plasma. In blood type AB, there are both the A and B antigens on the RBC membrane but no antibodies in the plasma.

Final answer:

Individuals with type B blood carry anti-A antibodies in their plasma. This immune response targets any foreign A antigens that might enter the body, such as through a blood transfusion.

Explanation:

People with type B blood carry anti-A antibodies in the plasma. This is because they have the B antigen on the surface of their red blood cells (RBCs) and, therefore, their immune system produces anti-A antibodies to target anything that is not recognized as self. These antibodies will attack foreign A antigens if they enter the body, such as through a blood transfusion. On the other hand, individuals with type A blood produce anti-B antibodies, while those with AB blood do not produce either anti-A or anti-B antibodies. People with type O blood, which lacks both A and B antigens on their RBCs, produce both anti-A and anti-B antibodies.

A jaguar that eats it's prey and then bounds across the rainforest after another possible meal is representing the characteristic of obtaining and using energy. T/F

Answers

True. He obtains energy then uses it to get more.








PLEASE HELP ASAP!!!! 100% CORRECT ANSWERS ONLY PLEASE!!!! I CANNOT RETAKE THIS.


Hunting reduced the population size of the northern elephant seal to as few as 20 individuals at the end of the 19th century. Their population has since rebounded to over 30,000, but they have much less genetic variation than a population of southern elephant seals that was not so intensely hunted. How is the lack of genetic variation related to the hunting episodes of the 1800's?



A. Genetic drift occurred; the few individuals left behind were the seals that passed on that specific gene pool.


B. Adaptation occurred; some seals were able to adapt to the hunting environment and they survived to pass on their genes.


C. During the 1800's some northern seals migrated and were able to survive. That gene pool is found in the current population.


D. Natural selection occurred; only the strongest northern elephant seals survived in the 1880's and that restricted gene pool exists today.

Answers

 A.) Genetic drift occurred; the few individuals left behind were the seals that passed on that specific gene pool.
A Genetic drift occurred; the few individuals left behind were the seals that passed on that specific gene pool.

The nurse is caring for a client with nursing diagnosis of ineffective tissue perfusion. which area of the heart would the nurse anticipate being compromised?

Answers

The right ventricle of the heart the nurse should anticipate. Occasionally, circumstances happen where this altercation of gases among the blood and the cells is disturbed in which the cells and ultimately the tissues and organs stop receiving adequate oxygen source. The body cannot function in deprived of oxygen that is clearly a problem. As soon as tissues do not obtain sufficient oxygen over the capillaries, this will result to ineffective tissue perfusion.

Final answer:

In cases of ineffective tissue perfusion related to the heart, the myocardium is most likely to be compromised due to conditions such as heart failure or ischemia caused by narrowed or blocked coronary arteries. This can result in inadequate oxygenation, cell death, and severe impairment of heart function.

Explanation:

When a nurse is caring for a client with an ineffective tissue perfusion nursing diagnosis, it implies that a certain area of the heart is not receiving an adequate blood supply, which could be due to heart failure or ischemia. The heart muscle that is most likely to be compromised is the myocardium, particularly the regions supplied by the narrowed or blocked coronary arteries.

Heart failure occurs when the heart can't pump with sufficient force to meet the body's needs, leading to inadequate oxygenation of tissues, which can result in cell death and severe impairment of heart function. Cardiac muscle, composed of cells with endoplasmic reticula, requires proper functioning to manage calcium ions and ensure adequate contractile force; thus, any impairment in this system can lead to heart failure.

Furthermore, the heart's ability to appropriately allocate resources and oxygenated blood during various states of activity is essential for maintaining cardiovascular homeostasis. When an immunocompromised individual, such as a patient with chronic myelogenous leukemia, experiences additional stress or illness, this can exacerbate heart function and lead to further complications due to the limited regenerative capacity of the cardiac muscle tissue. Ultimately, untreated heart failure can lead to the failure of other organs and severe systemic effects.

What strand of mrna would be produced from the strand of dna shown below?gct aag?

Answers

I believe the strand of mRNA that would be produced will be CGA UUC. mRNA is formed from the process of transcription which takes place in the nucleus where DNA molecule acts as primer, catalyzed by the enzyme RNA polymerase. One of the differences between DNA and RNA is that the nucleotide base Tyamine (T) is replaced by uracil (U) when forming RNA molecule. 

Animals that possess homologous structures probably _____. see concept 26.2 (page 556) view available hint(s) animals that possess homologous structures probably _____. see concept 26.2 (page 556) are the result of convergent evolution are not related are the result of similar environmental pressures in different evolutionary lineages evolved from the same ancestor have increased genetic diversity

Answers

I believe animals that possess homologous structures probably  evolved from the same ancestor. Homologous structures are similar because of common ancestry.  A homologous structure is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from  a common ancestor. 
Final answer:

Animals with homologous structures likely evolved from a common ancestor. These structures have common ancestry but may have diverse functions. Conversely, analogous structures, resulting from convergent evolution, have similar functions but do not derive from a shared ancestor.

Explanation:

Animals that possess homologous structures probably evolved from the same ancestor. Homologous structures are physical features in different species that have a common ancestry but may have different functions. This concept is a crucial aspect of evolutionary biology. For instance, the bones in the wings of bats and birds are homologous structures; their wings developed from the same limb bones of a common ancestor, although they may serve different functions in their respective species.

However, not all similar structures are homologous. Some similar structures are the result of convergent evolution, where different species evolve similar traits independently, often due to similar environmental pressures. These are known as analogous structures. For example, the wings of a bat (a mammal) and those of an insect, despite serving the same function (flight), do not share common ancestry, and hence are analogous, not homologous.

Determining whether a structure is homologous or analogous can provide insight into the evolutionary history of species. Understanding homologous structures aids in deciphering the phylogeny, or evolutionary history, of different species and determining how closely related different species are.

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Which gloves are generally used to improve grip when handling slippery objects?

Answers

I believe the answer is Fabric gloves. They are made of cotton or fabric blends and are generally used to improve grip when handling slippery objects. They also help insulate hands from mild heat or cold. A glove is a covering for the hand with separates sections for the fingers and thumb, sometimes extending over the wrist and part of the arm. They may be leather gloves, fabric gloves depending on the material they are made from or the function they are used for.

Nitrile or vinyl gloves are recommended over cotton for improved grip on slippery objects and to reduce the risk of contamination and skin irritation.

The gloves generally recommended for improving grip when handling slippery objects are made from materials like nitrile or vinyl, which provide better traction than traditional cotton gloves. Nitrile gloves are particularly advisable because they don't only improve grip but also offer protection against contamination by microorganisms, chemicals, and can prevent staines and irritation to the wearer's skin.

Unlike latex gloves, which can cause allergic reactions and are no longer recommended, nitrile and vinyl gloves are safer alternatives that are often used in various environments, from medical settings to handling photographs, negatives, and even when touching varnished surfaces.

What may prevent the detection of lupus anticoagulant in a plasma sample if the blood used for testing is not centrifuged for a sufficient time?

Answers

Increased platelets in the plasma sample

the coarse adjustment knob may be used in focusing with all objective lenses?
True or False

Answers

False. The coarse adjustment knob may be used in focusing with low power objective lenses.

This answer would be True

One of the most common digestive problems involving the esophagus is __________.

Answers

There are many digestive problems involving the esophagus (e.g. achalasia, squamous cell carcinoma of the esophagus, etc), but one of the most common esophageal diseases are heartburn or reflux disease also known as gastroesophageal reflux disease or GERD. GERD is characterized by the backflow of the stomach acids to the distal end of the esophagus causing damage and erosion. In chronic cases of GERD, the epithelium of the esophagus transforms from stratified squamous to columnar with goblet cells and this is called columnar metaplasia or Barrett's esophagus. This can predispose the patient to the risk of developing esophageal adenocarcinoma.

What is the role of natural selection in evolution?

Natural selection is a specific mechanism of evolution in which the heritable traits (characteristics) help an organism to survive his generation.
Natural selection is a specific mechanism of evolution in which the heritable traits (characteristics) help an organism to survive and reproduce successfully.
Natural selection is a specific mechanism of evolution in which all acquired traits (characteristics) help an organism to survive and reproduce successfully.

Answers

Hello!

The correct answer is B - 
Natural selection is a specific mechanism of evolution in which the heritable traits (characteristics) help an organism to survive and reproduce successfully.

Natural selection works by weeding out organisms less fit to their environment, and that way those with more efficient characteristics survive and reproduce.

Answer:

Natural selection is a specific mechanism of evolution in which the heritable traits (characteristics) help an organism to survive and reproduce successfully.

Explanation:

A species may successfully live in its environment due to

Asexual reproduction
genetic variation

Answers

The answer is genetic variation.

PLEASE HELP
If scientists were trying to construct recombinant DNA molecules, how would they do it?


by combining the RNA of two different organisms

by combining the proteins from two different organisms

by combining the DNA of two different organisms

by using RNA from plants

Answers

I'm pretty sure it would be by combining the DNA of two different organisms

Answer: Option C

Explanation:

The term recombinant DNA technology refers to combination of DNA from two different organisms. The gene of interest from the desired organism is incorporated into the bacterial cell.

When the bacterial cells replication, the gene of interest is also replicated along with the bacterial DNA.

There are many products which is produced for serving the society like medicines, enzymes, chemicals et cetera.

This technique allows us to have a huge amount of product in the very small period of time as the replication rate of bacterial species are very high.

How does the skin on your palm differ from that on the back (posterior) of your hand?

Answers

I think the skin is thinner on the back then in the front

If two haploid yeast cells fuse to produce one diploid cell, and then this diploid cell undergoes meiosis to produce four haploid cells, what is the probability that an individual haploid cell resulting from this meiosis will have a complete parental set of chromosomes

Answers

None of them, 0%, 0/4

If two haploid yeast cells fuse to produce one diploid cell, and then diploid cell undergoes meiosis to produce four haploid cells, as a result 50% probability that an individual haploid cell resulting from this meiosis will have a complete parental set of chromosomes.

What is meiosis?      

 

In the case of the diploid yeast cell that has been formed by the fusion of two haploid cells, it contains two sets of chromosomes, one set from each parents, so when this diploid cell undergoes meiosis, the two sets of chromosomes are separated into four haploid cells, and each haploid cell that is produced from the meiosis will receive a random assortment of chromosomes from the original diploid cell, so 50% haploid cell contains the complete parental set.

Hence, there is a 50% probability that an individual haploid cell resulting from meiosis will have a complete parental set of chromosomes as per the scenario.

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The solute most abundant in phloem sap is _____. see concept 36.5 (page 797) the solute most abundant in phloem sap is _____. see concept 36.5 (page 797) amino acids minerals sugar hormones water

Answers

sugar
since phloem transports food in plant
Final answer:

The most abundant solute in phloem sap is sugar, specifically sucrose. This sucrose is transported from source cells into companion cells and then into sieve-tube elements, creating a flow from source to sink.

Explanation:

The solute most abundant in phloem sap is sugar, specifically sucrose. Phloem sap is an aqueous solution that contains up to 30 percent sugar, alongside minerals, amino acids, and plant growth regulators. Sucrose is actively transported from source cells into companion cells and then into the sieve-tube elements. This reduces the water potential, which causes water to enter the phloem from the xylem, thereby increasing pressure and causing the bulk flow of phloem from source to sink. Unloading at the sink end of the phloem tube occurs by either diffusion or active transport of sucrose molecules from an area of high concentration to one of low concentration.

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In pea plants, yellow seeds (y) are dominant to green seeds (y) and round seeds (r) are dominant to wrinkled seeds (r). the genes for seed color and seed shape are on different chromosomes. two true-breeding parents, one with yellow round peas and the other with green wrinkled peas, are crossed. what are the genotypes of the parents, and what kind of gametes will they produce?

Answers

This can be most efficiently answered using a Punnett square for crossing between YYRR and yyrr  (true breeding parents, so homozygous)

               yyrr
YYRR    YyRr        
So the only possible genotype of offsprings is YyRr, and the phenotype are yellow and round.

Final answer:

The true-breeding parents of yellow round peas and green wrinkled peas have genotypes RRYY and rryy, respectively. They will produce RY and ry gametes and all F1 offspring will display the yellow round seed phenotype with a genotype of RrYy.

Explanation:

In pea plants, the genotype for yellow round seeds is RRYY, where 'R' represents the dominant round trait and 'Y' represents the dominant yellow color. The green wrinkled seeds have the genotype rryy, where 'r' is the recessive wrinkled trait and 'y' is the recessive green color. When these two plants are crossed, the genotypes of the parents would be RRYY (yellow round) and rryy (green wrinkled). Because these are true-breeding plants, they are homozygous for their respective traits.

The gametes produced by each parent will reflect one allele for each trait. The round yellow parent (RRYY) will produce gametes with the RY allele, and the green wrinkled parent (rryy) will produce gametes with the ry allele. When these gametes combine during fertilization, all the F1 offspring will have the genotype RrYy, which are dihybrids, displaying the dominant phenotype of yellow round seeds.

A client has been admitted to the critical care unit with a diagnosis of peritonitis that has necessitated treatment with gentamicin. as a result, the care team should be cautious when concurrently administering other medications that may cause which?

Answers

There are choices for this question namely:

a. Neutropenia or autoimmune effects
b. Ototoxicity or nephrotoxicity
c. Increased intracranial pressure or changes in cognition
d. Anemia or impaired erythropoiesis

The correct answer is "ototoxicity or nephrotoxicity". Gentamicin is an antibiotic from the class of aminoglycosides. All aminoglycosides have been known to cause both ototoxicity and nephrotoxicity in patients. Other ototoxic drugs or nephrotoxic drugs (i.e. furosemide and indomethacin respectively) shall be given with caution. 

The enzyme plus the substrate involved in the reaction are jointly called the

Answers

I think they are called the Enzyme-substrate complex. Enzyme substrate complex is the intermediate formed when a substrate molecule interacts with the active site of an enzyme. As a result of the formation of the complex the substrate undergoes a chemical reaction and is then converted to a new product. 

How many amino acids would be made from the strand in question 2

Answers

So remember, transcription is DNA to RNA. The coding for that is T=A, A=U, C=G, G=C. So your coding would be AUGGGGCUC.
For question three you’d have 3 amino acids. Remember that one amino acid is made of 3 letters, or codons. So if you divide your stand up you’ll get 3. 3 amino acids. Hope this helped.






How are different climates affected by water erosion?

Answers

Answer:

Water erosion can contribute to pollution.

Explanation:

Remember that pollution refers to the introduction of contaminants in natural environments causing negative changes in the ecosystem.

Water erosion is possible because of the sediments that carries and erode soil surface. Also, it can contribute to water contaminations because of the different types of sediments can carry, finally causing pollution.

Which of the following do not require enzymes to break them down to smaller units before being absorbed?

Answers

There are choices for this question namely:

proteins
starches
disaccharides
monosaccharides

The correct answer is "monosaccharides". Monosaccharides are the most basic form of sugar that can be absorbed in the gastrointestinal tract. When we consume carbohydrates in the form of complex carbohydrates (i.e. starch) it needs to be acted upon by enzymes (initially, amylase) to break it down to smaller dextrans and disaccharides. Disaccharides will be further broken down by disaccharidases in the intestines to monosaccharides for them to be absorbed.

Proteins are acted upon by pancreatic enzymes to break it down to smaller peptides.

Which statement best describes how modern taxonomist classify and organism?

Answers

Taxonomy can be defined as science of naming, describing and classifying orgainisms. In 1707-1778, Swedish botanist named Carolus Linneaus developed a modern taxonomic system and the statement that describes the modern taxonomy of organism is that “Organism physical characteristics can be used to differentiate and identify different species and this factor is based on their genetics".

A key feature of ________ is an odd motor state in which the individual may remain frozen in a stupor for long periods of time.

Answers

Out of the following choices;

a. catatonic schizophrenia

b. obsessive-compulsive disorder

c. paranoid schizophrenia

d. residual schizophrenia

e. undifferentiated schizophrenia

The answer is a. Individuals who suffer catatonic schizophrenia, in addition to stupor, can also exhibit other symptoms such as catalepsy (where the patient assumes abnormal postures) and stereotypy (repeating one motion/movement for long without reason). The disorder can be managed using methods such as psychotherapy

Name and briefly describe the three essential principles of test construction ap psych

Answers

The three essential principles of test construction are listed below:
I. Standardization
II. Reliability
III. Validity


Standardization- To standardize a test means that test is given to a large, representative sample of people, in order to establish the norms that future test takers are compared against (using a normal distribution)

Reliability - This principle requires that a test must produce reliable, consistent results when it is repeated. The reliability of a test can be verified using the test-retest method or the split-half method.

Validity - This refers to the ability of a test to measure what it was designed to measure.

Psychological Test Construction is the standardized test to understand the individual behavior, thinking, and feeling. Three essential principles are:

Standardization.Reliability.Validity.

Three essential principles are defined as:

Standardization is referred to as the establishment of norms or rules for the test. The test is conducted on a large number of people to establish the norms against future patients. Reliability is the principle that results in consistent and reliable results. The reliability of the test can be verified by using the test-retest method. Validity refers to the ability of the test to determine optimum results when used with corresponding tests.

Therefore, three principles are standardization, reliability, and validity.

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