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Which of the following is a product of glycolysis?

A.

Lactate

B.

Carbon dioxide

C.

Pyruvate

D.

Acetyl-CoA

Answer and Explanation

The Correct Answer is C

A. Lactate is produced during anaerobic metabolism (when oxygen is scarce) as a byproduct of glycolysis, but it is not the direct product of glycolysis itself.

 

B. Carbon dioxide is a byproduct of cellular respiration, specifically during the Krebs cycle, not glycolysis.

 

C. Pyruvate is the end product of glycolysis, where glucose is broken down into two molecules of pyruvate.

 

D. Acetyl-CoA is formed from pyruvate during the transition step before the Krebs cycle, not directly from glycolysis.


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View Related questions

Correct Answer is A

Explanation

A. High HDL: low LDL- High-density lipoprotein (HDL) is known as "good cholesterol" because it helps remove cholesterol from the arteries. Low-density lipoprotein (LDL) is known as "bad cholesterol" because it can lead to plaque buildup in arteries. A high HDL to low LDL ratio is considered healthy as it is associated with a lower risk of cardiovascular disease.

B. High LDL: low chylomicron- High levels of LDL are unhealthy as they increase the risk of plaque formation in arteries, which can lead to cardiovascular diseases. Chylomicrons are lipoproteins that transport triglycerides and cholesterol from the intestines to other parts of the body.

C. High SFA: low HDL- Saturated fatty acids (SFA) can raise LDL levels and lower HDL levels, leading to an unhealthy lipid profile and increased risk of heart disease.

D. High LDL: low HDL- High LDL and low HDL is an unhealthy combination because it increases the risk of cardiovascular disease due to higher potential for plaque buildup in the arteries.

Correct Answer is D

Explanation

A. Azotemia is a condition characterized by elevated levels of nitrogenous waste products in the blood, not a direct by-product of protein catabolism.

B. Creatinine is a by-product of muscle metabolism, not directly from protein catabolism.

C. Uric acid is a by-product of nucleic acid metabolism, not protein catabolism.

D. Urea is a primary by-product of protein catabolism, formed in the liver and excreted by the kidneys. This is the correct answer.

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