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Novay_Z [31]
3 years ago
9

The pyruvate dehydrogenase is allosterically inhibited by all of the following except?

Biology
2 answers:
marishachu [46]3 years ago
8 0

Answer:

The correct answer is option e) "low acetyl coa / coa-sh ratios".

Explanation:

Allosteric inhibition, also known as negative allosteric modulation, occurs when a ligand decreases one enzyme's affinity to its substrate by binding to a site different from the active site. One classic example of allosteric inhibition takes place in pyruvate dehydrogenase, an enzyme that converts pyruvate into acetyl-CoA by a process called pyruvate decarboxylation. Pyruvate dehydrogenase is inhibited by the end products of the reactions that it catalyzes to regulate its activity. Therefore, a low acetyl coa / coa-sh ratios would not inhibited pyruvate dehydrogenase, on the contrary, a high concentration of acetyl coa would inhibit its activity.

MaRussiya [10]3 years ago
4 0

Answer:

e) low acetyl-CoA/CoA-sh ratios

Explanation:

The enzyme pyruvate dehydrogenase is allosterically inhibited by a high concentration of some of the products of the reaction it catalyzes: NADH and Acetyl-CoA, and ATP (since its a enzyme involved in the cellular respiration, a metabolic process that converts organic molecules into energy/ATP).

So, if you have a low ratio of acetyl-CoA/CoA-sh  it means you have a more of CoA-sh than acetyl-CoA, therefore wouldn't allosterically inhibited the enzyme.

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In a hypothetical population of plants, flower color is determined by a single gene with two alleles. In a population of 500 pla
blondinia [14]

Answer:

In the F1 generation

RR = 0%

Rr = 50% (or 0.5)

rr = 50% (or 0.5)

Explanation:

A pink flowering plant has the genotype Rr. It is heterozygous for the allele. The alleles for this gene appears to show incomplete dominance, as the heterozygous phenotype is a blend of the two homozygous genotypes.

A white flowering plant has the genotype rr. It is homozyogous for the white allele

A punnet square of the cross is shown.

The resulting punnet square shows that only Rr and rr genotypes are possible, at a ratio of 50:50 (or 1:1). Therefore, the genotype frequency of Rr is 50%, and rr is 50% in the F1 generation. This can also be written as 0.5. It is not possible to get a red plant, as the genotype RR can not come from this cross

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8 0
3 years ago
The amount of carbon dioxide in the atmosphere would greatly increase if there were fewer _____.
jasenka [17]
B. Gases because it increase by less
4 0
3 years ago
Which of these practices conserves water on an individual level
nataly862011 [7]

Answer:

Here are some ways that you can conserve water on an individual level:

1. Consider the water footprint of your diet.

2. don't leave the tap running needless.

3. Choose and use your appliances wisely.

4. Convert your toilet to a dual flush and don't flush it more then necessary .

5. stop that leaky toilet.

Explanation:

also can you plz mark me as brainliest

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3 0
3 years ago
Write the formula that shows the release of energy by the mitochondria
Pie

Answer:

Mitochondria is the organelle where cellular respiration takes place. Cellular respiration can be described as a process in which oxygen and glucose are converted into carbon dioxide and water along with the release of ATP. This reaction can be written as:

Glucose + Oxygen → Carbon dioxide + Water + ATP molecules

C6H12O6 +   6O2→  6CO2 +  6H2O +  ATP

The ATP made can be broken down so that energy is released.

ATP + H2O → ADP + Pi + free energy

6 0
3 years ago
The blank is the basic unit of life <br> A. Organism<br> B. Cell<br> C. Tissue <br> D. Organelle
balandron [24]

Answer:

Organism.

Explanation:

A cell is the smallest unit of a living thing. Whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms.

5 0
3 years ago
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