#Question id: 541
#Unit 1. Molecules and their Interaction Relevant to Biology
The overall △G for glycolysis is -72 kJ/mol in erythrocytes. Which statement below is true?
A) The value of △G0ʹ is also -72 kJ/mol since the cytosol pH is close to 7.
B) The free energy of glycolysis is found as the sum of the standard free energy changes for
the individual pathway reactions.
C) The negative sign of △G shows that this pathway will proceed toward product (pyruvate) under normal cellular conditions.
#Question id: 542
#Unit 1. Molecules and their Interaction Relevant to Biology
Hamsters love to run on exercise wheels. Prolonged running at a high rate of speed requires ATP. Could a hamster with a defective gene for the enzyme lactate dehydrogenase meet the extra ATP demand for prolonged, fast wheel-running by maintaining a high rate of glycolysis? Why or why not?
#Question id: 543
#Unit 1. Molecules and their Interaction Relevant to Biology
If glucose labeled with 14C at C-1 (the aldehyde carbon) were metabolized in the liver, the first radioactive pyruvate formed would be labeled in:
#Question id: 544
#Unit 1. Molecules and their Interaction Relevant to Biology
One of the enzymes involved in glycolysis, aldolase, requires Zn2+ for catalysis. Under conditions of zinc deficiency, when the enzyme may lack zinc, it would be referred to as the:
#Question id: 545
#Unit 1. Molecules and their Interaction Relevant to Biology
Which one of the following is not among the six internationally accepted classes of enzymes?
#Question id: 546
#Unit 1. Molecules and their Interaction Relevant to Biology
Enzymes are potent catalysts because they: