Which of the following factors affect the velocity of an enzyme catalyzed reaction?
a. Temperature.
b. Concentration of Substrate.
c. pH.
d. All of the above.
e. None of the above. - ANSWER-d
Amino acids share a common core structure that is comprised of:
a Acarboxyl group (COOH).
b. An alp...
BCHM 270 Exam Questions| Already
Answered| GRADED A+
Which of the following factors affect the velocity of an enzyme catalyzed reaction?
a. Temperature.
b. Concentration of Substrate.
c. pH.
d. All of the above.
e. None of the above. - ANSWER-d
Amino acids share a common core structure that is comprised of:
a Acarboxyl group (COOH).
b. An alpha-carbon (Ca).
c. An amino group (NHs*).
d. All of the above.
e. None of the above. - ANSWER-d
Which of the following is NOT an interaction responsible for stabilizing the -3 dimensional fold of a
protein?
a. Hydrogen bond
b. Hydrophobic interactions
c. Ionic bond
d. Disulfide bond
e. None of the above. - ANSWER-a
The Michaelis constant (Km):
a. Is the concentration of enzyme required to reach Vmax
b. Is the concentration of substrate required to reach Vmax/2
c. Is unrelated to the affinity of an enzyme for a substrate.
,d. All of the above.
e. None of the above. - ANSWER-b
ATP is the currency of energy in the cell, storing and transferring energy. The energy in ATP is released
by:
a. Pumping protons across the mitochondrial membrane.
b. Hydrolysis of phosphates from the ATP molecule.
c. Coupling of reactions to ATP formation.
d. All of the above.
e. None of the above. - ANSWER-b
The enzymes that catalyze the reactions of the Tricarboxylic acid (TCA) cycle:
a. Are found in the mitochondrial matrix.
b. Require energy in the form of ATP.
c. Are found in the cytosol.
d. Do not recycle the intermediates of the pathways.
e. Regenerate acetyl CoA after completion of the cycle. - ANSWER-a
Aerobic glycolysis describes the conversion of glucose to:
a. Acetvl CoA.
b. Lactate.
c. Phosphoenolpyruvate.
d. Pyruvate.
e. Glucose. - ANSWER-d
In many cells, the requirement of NADPH exceeds the requirement forribose 5- phosphate. Under these
conditions the pentose phosphate pathway results in the production of:
a. Tricarboxylic acid (TCA) cycle intermediates.
b. Glucose to be stored as glycogen.
, c. Amino acids for protein synthesis.
d. Glycolysis intermediates.
e. Pyruvate, COz and H20 - ANSWER-
Glycogen synthesis is activated by:
a. Glucose 6-phosphate
b. ATP
c. NADH
d. All of the above.
e. None of the above. - ANSWER-
HMG CoA reductase is an enzyme involved in:
1 Fatty acid synthesis.
2 Ketone
3 Fatty acid degradation
4 Cholesterol synthesis
a. only 4 is correct
b. 2 and 4 are correct
c. all are correct
d. 1 and 3 are correct
e. 1, 2, and 3 are correct - ANSWER-
Which of the following is not correct regarding Chylomicrons:
a. Contain Apo B-100
b. Transport lipids from the small intestine to peripheral tissues c. Are assembled in intestinal mucosal
cells
d. Contain fat-soluble vitamins
e. Are high in protein. - ANSWER-
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