The citric acid cycle is a stage of catabolism that oxidizes acetate into carbon dioxide and generates energy. There are eight enzymes involved in the citric acid cycle.

Which enzymes produce coenzyme A as a product?

A. citrate synthase
B. succinic dehydrogenase
C. succinyl‑CoA synthetase
D. fumarase

The correct answer is option A. "citrate synthase" and C. "succinyl‑CoA synthetase".

Explanation:

Citrate synthase is the enzyme that catalyzes the first reaction of the citric acid cycle, which is the the conversion of oxaloacetate and acetyl-coenzyme A into citrate and coenzyme A. Succinyl‑CoA synthetase catalyzes the reversible reaction of succinyl-CoA to succinate, letting coenzyme A as byproduct of the reaction.Therefore, these two enzymes produce coenzyme A as a product of their reactions.

Explanation:

The citric acid cycle (CAC) which is also called the tricarboxylic acid cycle (TCA) but this was originally referred to as the Krebs cycle. This is an important in respiration that is designed to carefully release energy from acetyl-CoA in a series of chemical reactions by using eight different enzymes.  

Citrate synthase produces coenzyme A

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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