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Why is it advantageous for citrate the product of reaction 1 of the citric acid cycle to inhibit Phosphofructokinase which catalyzes the third reaction of glycolysis?

Why is it advantageous for citrate, the product of reaction 1 of the TCA cycle, to inhibit the glycolytic enzyme phosphofructokinase? High levels of citrate mean high energy levels.

What happens during pyruvate oxidation?

In prokaryotes, it happens in the cytoplasm. Overall, pyruvate oxidation converts pyruvate—a three-carbon molecule—into acetyl CoAstart text, C, o, A, end text—a two-carbon molecule attached to Coenzyme A—producing an NADHstart text, N, A, D, H, end text and releasing one carbon dioxide molecule in the process.

What happens when pyruvate is reduced?

When oxygen is not present, pyruvate will undergo a process called fermentation. In the process of fermentation the NADH + H+ from glycolysis will be recycled back to NAD+ so that glycolysis can continue. In the process of glycolysis, NAD+ is reduced to form NADH + H+.

How is pyruvate used in human cells when oxygen is available?

If oxygen is available (aerobic conditions), pyruvate molecules progress into the citric acid cycle. If oxygen is not available then pyruvate undergoes fermentation in the cytoplasm of the cell. There are two types of fermentation: Alcoholic fermentation – pyruvate is converted to ethanol and CO 2.

What is the product of pyruvate oxidation?

Pyruvate oxidation produces acetyl Coenzyme A, NADH and carbon dioxide.

What are the 3 inputs of cellular respiration?

Unit 5: Photosynthesis & Cell Respiration

Question Answer
What are the inputs of cellular respiration? Glucose, oxygen
What are the outputs of cellular respiration? Carbon dioxide, water, energy (ATP)
What is the site of cellular respiration? Mitochondria

Where do the inputs of cellular respiration come from?

Remember that one of the inputs to cellular respiration is carbohydrate, specifically glucose. Plants form glucose by photosynthesis and animals get glucose by breaking down the food they eat. During cellular respiration, glucose combines with oxygen to release energy and to form carbon dioxide and water.

What are the inputs of aerobic respiration?

The inputs, or reactants, of cellular respiration are glucose and oxygen. The outputs, or products, of cellular respiration are water, carbon dioxide…