AFNS — AFNS Biology
Enzymes
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#25 Feedback inhibition regulates:
A) Metabolic pathways
B) Gravity
C) Photosynthesis only in plants
D) Cell division only
Answer: A
#26 Substrate concentration increase initially:
A) Increases reaction rate
B) Always stops enzyme
C) Destroys enzyme always
D) Has no effect
Answer: A
#27 At very high substrate, rate plateaus because:
A) Enzyme saturated
B) Substrate disappears
C) Temperature zero
D) pH infinite
Answer: A
#28 Salivary amylase acts in:
A) Mouth
B) Stomach
C) Liver
D) Large intestine
Answer: A
#29 Renin is enzyme in:
A) Stomach
B) Small intestine
C) Saliva
D) Blood only
Answer: A
#30 Zymogens are:
A) Inactive enzyme precursors
B) Active enzymes only
C) Lipids
D) Sugars
Answer: A
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