Which one of the following statements is NOT true?
A. In competitive inhibition, substrate and inhibitor compete for the same active site of an enzyme
B. Addition of a large amount of substrate to an enzyme cannot overcome uncompetitive inhibition
C. A transition state analogue in enzyme catalyzed reaction increases the rate of product formation
D. In non-competitive inhibition, KM of an enzyme for its substrate remains constant as the concentration of the inhibitor increases
Answer: Option C
Which one of the following is INCORRECT about protein structures?
A. A protein fold is stabilized by favorable noncovalent interactions
B. All parts of a fold can be classified as helices, strands or turns
C. Two non-covalent atoms cannot be closer than the sum of their van der Waals radii
D. The peptide bond is nearly planar
Which one of the following amino acids has three ionizable groups?
A. Glycine
B. Leucine
C. Valine
D. Lysine
During lactic acid fermentation, net yield of ATP and NADH per mole of glucose is
A. 2 ATP and 2 NADH
B. 2 ATP and 0 NADH
C. 4 ATP and 2 NADH
D. 4 ATP and 0 NADH
The reactions leading to the formation of amino acids from the TCA cycle intermediates are
A. Carboxylation
B. Isomerization
C. Transamination
D. Decarboxylation
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