Take full exam for free

The enzyme(s) called ____________ break(s) down the substrate called_________________.

A.

lactose; lactase

B.

lipases; micelles

C.

peptidases; proteins

D.

lactase; glucose

Answer and Explanation

The Correct Answer is C

A. Lactose; lactase: Lactase is the enzyme that breaks down lactose, not the other way around. 

 

B. Lipases; micelles: Lipases break down lipids (fats) into fatty acids and glycerol, not micelles. Micelles are formed as part of the digestion process but are not the substrate for lipases. 

 

C. Peptidases; proteins: Peptidases (or proteases) break down proteins into smaller peptides and amino acids. This is the correct answer.

 

D. Lactase; glucose: Lactase breaks down lactose into glucose and galactose, not just glucose. 


View Related questions

Correct Answer is D

Explanation

A. Minerals are absorbed directly into the bloodstream, not through lacteals.

B. Glucose is absorbed directly into the bloodstream through capillaries, not through lacteals.

C. Amino acids are absorbed into the bloodstream through capillaries, not through lacteals.

D. Triglycerides are absorbed by the lacteals in the small intestine. Lacteals are lymphatic vessels that transport absorbed lipids (including triglycerides) from the digestive tract.

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.