All of the following are cofactors used in the reaction catalyzed by pyruvate dehydrogenase EXCEPT ________.A. NAD+
B. Thiamine pyrophosphate
C. Biotin
D. FAD

Answers

Answer 1

Answer:

Answer: Option B.

Thiamine pyrophosphate.

Explanation:

Pyruvate dehydrogenase is an enzyme that catalyses the oxidative decarboxylation of pyruvate to acetyl coA , NADH and CO2. Pyruvate dehydrogenase uses NAD, biotin, FAD and lipoic acid.

Thiamine pyrophosphate is not a cofactor for pyruvate dehydrogenase . It is a cofactor in living systems. Thiamine pyrophosphate is a coenzyme that function in carbohydrates, Amino acids and lipids metabolism.

Answer 2

Answer:

Final answer:

Biotin is not a cofactor in the reaction catalyzed by pyruvate dehydrogenase. NAD+, Thiamine pyrophosphate, and FAD do function as cofactors in this reaction.

Explanation:

The cofactors used in the reaction catalyzed by pyruvate dehydrogenase are NAD+, Thiamine pyrophosphate, and FAD. The compound that is not used as a cofactor in this reaction is Biotin. Biotin functions as a cofactor for carboxylase enzymes, and it is involved in fatty acid synthesis and gluconeogenesis but not in the process involving pyruvate dehydrogenase.

Learn more about Biotin here:

brainly.com/question/34170554

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if a parent has curly hair and another parent has straight hair and the child has wavy hair is that incomplete dominance

Answers

No is not The xy chromesomes may have stronger or even genes therefore the child has a mixture of hair .the roots may be straight but the ends may be curly

Incomplete Dominance. Got that example straight out of my biology text :)

Question 1Why is water necessary for living organisms?

All organisms need water to stay clean.

All organisms need water as an energy source.

All organisms need water to transport chemicals into their cells.

All organisms live in the water.

2 points

Answers

ether
All organisms need water as an energy source.

All organisms need water to transport chemicals into their cells.

Which below is not a way in which a contrail may form?

Answers

The answer is Due to heating of the air by the engine exhaust. Contrails are formed when the hot exhaust of the plane engines is rapidly cooled by the cold air in the upper atmosphere. The water vapor in the engine exhaust, formed in the combustion of fuel, freezes immediately to ice crystals due to the low pressure and -36oC temperatures in the 8000 m altitude in which the planes cruise.

What role does coral play in the ecosystem?

Answers

Answer: Providing shelter and spawning grounds to a wide range of ocean life, coral reefs serve an important role in the marine ecosystem. ... Another role is protection from strong ocean currents and high waves. As the name "barrier reef" implies, reefs act as a barrier protecting the shorelines.

Hope this helps !

Approximately 99% of the microbes in the intestines are obligate anaerobes. We have plenty of blood vessels that can bring oxygen to the tissues of the intestines. Why would there be obligate anaerobes within these areas? A. The bacteria in the intestines are protected from exposure to the oxygen in the tissues by the lining of the intestines. B. The bacteria consume all the oxygen in the tissue areas brought by the blood vessels, creating an anaerobic environment. C. While the blood vessels supply oxygen to the tissues of the intestines, the inner area where the bacteria reside is NOT supplied with blood/oxygen. Since it's deep within our bodies, there's no chance for oxygen to get into these inner areas of the intestinal tube, creating a highly anaerobic environment. D. The aerobic microbes are outcompeted for nutrients in these areas by the anaerobic microbes.

Answers

Answer:

The correct answer is option C.

Explanation:

The human gastrointestinal microbiota or the gut microbiota or the gut flora refers to the microbes, which thrive in the digestive tracts of humans. The human gastrointestinal tract comprises the gathering of all the genomes of gut microbiota. It is the niche where the human microbiota is found.

The microbial composition of the gut microbiota differs across the digestive tract. In the small intestine and stomach, very small species of bacteria are found, while the colon comprises the densely populated microbial ecosystem. Of these over 99 percent of the bacteria found in the gut are anaerobes, as the space within the intestines is highly anaerobic.

These microbes are confined deep within the body where oxygen cannot reach as it is not supplied with the help of blood vessels. Thus, a highly anaerobic environment is witnessed deep within the intestinal regions.

How many CO2 molecules are produced when three glucose molecules undergo cellular respiration? Explan

Answers

Answer:

18 molecules of $CO_(2)$

Explanation:

In heterotrophic nutrition, organisms ingest or absorb food made by autotrophs to obtain energy. Planta and other photosynthesizing organisms make sugars via photosynthesis, in a form of (partly) light-dependent biosynthesis.

In mitochondria, they break down sugars through aerobic respiration. For the sugar glucose, this results in the production of carbon dioxide and water along with energy in the form of ATP or adenosine triphosphate.

C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP

glucose+ oxygen → carbon dioxide+ water+ energy

For 3 molecules of glucose, multiply the number of reactants and products...

(C6H12O6+ 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP ) x 3

Thus...

3 C6H12O6+ 18 O2 → 18 CO2 + 18 H2O + ≅114 ATP

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