The enzyme(s) called ____________ break(s) down the substrate called_________________.
lactose; lactase
lipases; micelles
peptidases; proteins
lactase; glucose
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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Penetrate the vagina: The acrosome does not play a role in penetrating the vagina. Its function is specifically related to the sperm's ability to penetrate the ovum, making this option incorrect.
B. Dissolve the stickiness of the semen: While enzymes do play a role in semen liquefaction, this is not the function of the acrosome. The acrosome is primarily involved in the process of fertilization, not semen modification.
C. Dissolve the mucosa of the uterus: The acrosome is not involved in dissolving the mucosa of the uterus. Its function is related to penetrating the barriers surrounding the ovum.
D. Penetrate barriers surrounding the ovum: The acrosome contains enzymes that break down the outer layers of the ovum (such as the zona pellucida), allowing the sperm to penetrate and fertilize the egg. This is the correct answer.
Correct Answer is B
Explanation
A. Glomerular capillaries are involved in the filtration of blood to form the glomerular filtrate, not in the reabsorption of glucose and amino acids.
B. Proximal convoluted tubule is where the majority of glucose and amino acids are reabsorbed from the glomerular filtrate back into the bloodstream.
C. Renal corpuscle consists of the glomerulus and Bowman's capsule and is involved in the filtration process, not in reabsorption.
D. Distal convoluted tubule is involved in the fine-tuning of electrolyte and acid-base balance, not in the primary reabsorption of glucose and amino acids.
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