#Question id: 539
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following mutases catalyze the formation of a 2,3-BPG intermediate?
A) muscle phosphoglycerate mutases
B) plant phosphoglycerate mutases
C) yeast phosphoglycerate mutases
#Question id: 540
#Unit 1. Molecules and their Interaction Relevant to Biology
During strenuous exercise, the NADH formed in the glyceraldehyde 3-phosphate dehydrogenase reaction in skeletal muscle must be reoxidized to NAD+ if glycolysis is to continue. The most important reaction involved in the reoxidation of NADH is:
#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: