2. Why are some enzymes needed only in the gluconeogenesis pathway and not in the glycolysis pathway?

Biochemistry
9th Edition
ISBN:9781319114671
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Chapter1: Biochemistry: An Evolving Science
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2. Why are some enzymes needed only in the gluconeogenesis pathway and not in
the glycolysis pathway?
3. Which one of the following reactions only occurs during gluconeogenesis (i.e.,
not during glycolysis)?
a. 1,3-bisphosphglycerate into 3-phosphoglycerate
b. Glucose 6-phosphate into fructose 6-phosphate
c. Oxaloacetate into Phosphoenolpyruvate
d. Phosphoenolpyruvate into Pyruvate
4. An increase in glucagon levels can
a. Promote the degradation of glycogen (i.e., glycogenolysis)
b. Occurs during the fasting state (starvation)
c. Promotes the synthesis of glycogen
d. A and B
5. A high school girl who is self-conscious about her appearance has been fasting for
several days to fit into a dress she intentionally bought a size too small for a
school dance. Which of her organs/tissues is producing the glucose that is being
synthesized through gluconeogenesis?
a. Red blood cells
b. Muscles
C. Liver
d. Brain
Transcribed Image Text:2. Why are some enzymes needed only in the gluconeogenesis pathway and not in the glycolysis pathway? 3. Which one of the following reactions only occurs during gluconeogenesis (i.e., not during glycolysis)? a. 1,3-bisphosphglycerate into 3-phosphoglycerate b. Glucose 6-phosphate into fructose 6-phosphate c. Oxaloacetate into Phosphoenolpyruvate d. Phosphoenolpyruvate into Pyruvate 4. An increase in glucagon levels can a. Promote the degradation of glycogen (i.e., glycogenolysis) b. Occurs during the fasting state (starvation) c. Promotes the synthesis of glycogen d. A and B 5. A high school girl who is self-conscious about her appearance has been fasting for several days to fit into a dress she intentionally bought a size too small for a school dance. Which of her organs/tissues is producing the glucose that is being synthesized through gluconeogenesis? a. Red blood cells b. Muscles C. Liver d. Brain
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