When glucose is metabolized to carbon dioxide what percentage of the available
energy is captured as chemical energy in the form of ATP? - ANSWER 30%
Catabolic pathways such as glycolysis often trap energy in the biochemical
intermediates: - ANSWER NADH, ATP
Which biochemical intermediate is the most oxidized? - ANSWER CO2
Which single reaction in glycolysis is bypassed by two reactions in
gluconeogenesis? - ANSWER conversion of PEP to pyruvate by pyruvate
kinase
Which enzyme in glycolysis converts a six-carbon intermediate into two three-
carbon intermediates? - ANSWER aldolase
Why is the lactate dehydrogenase reaction an important addition at the end of
the glycolysis pathway? - ANSWER It allows glycolysis to proceed under
anaerobic conditions
What activates monosaccharides and gives polysaccharide formation a
favourable free energy change? - ANSWER formation of nucleotide
derivatives
In the regulation of glycogen metabolism what is the first factor activated after
epinephrine binds to an extracellular receptor? - ANSWER G protein
Two major products of the pentose phosphate pathway are: - ANSWER
NADPH and ribose-5-P
The conversion of succinate to fumarate in the TCA cycle is coupled to the
formation of: - ANSWER FADH2
energy is captured as chemical energy in the form of ATP? - ANSWER 30%
Catabolic pathways such as glycolysis often trap energy in the biochemical
intermediates: - ANSWER NADH, ATP
Which biochemical intermediate is the most oxidized? - ANSWER CO2
Which single reaction in glycolysis is bypassed by two reactions in
gluconeogenesis? - ANSWER conversion of PEP to pyruvate by pyruvate
kinase
Which enzyme in glycolysis converts a six-carbon intermediate into two three-
carbon intermediates? - ANSWER aldolase
Why is the lactate dehydrogenase reaction an important addition at the end of
the glycolysis pathway? - ANSWER It allows glycolysis to proceed under
anaerobic conditions
What activates monosaccharides and gives polysaccharide formation a
favourable free energy change? - ANSWER formation of nucleotide
derivatives
In the regulation of glycogen metabolism what is the first factor activated after
epinephrine binds to an extracellular receptor? - ANSWER G protein
Two major products of the pentose phosphate pathway are: - ANSWER
NADPH and ribose-5-P
The conversion of succinate to fumarate in the TCA cycle is coupled to the
formation of: - ANSWER FADH2
