Problem 22
What is the role of biotin in gluconeogenesis?
Problem 25
How does the hydrolysis of fructose- \(1,6-\) biphosphate bring about the reversal of one of the physiologically irreversible steps of glycolysis?
Problem 27
How does fructose- \(2,6-\) bisphosphate play a role as an allosteric effector?
Problem 30
Earlier biochemists called substrate cycles "futile cycles." Why might they have chosen such a name? Why is it something of a misnomer?
Problem 31
Earlier biochemists called substrate cycles "futile cycles." Why might they have chosen such a name? Why is it something of a misnomer?
Problem 35
Suggest a reason or reasons why the Cori cycle takes place in the liver and in muscle.
Problem 36
Explain how fructose-2,6-bisphosphate can play a role in more than one metabolic pathway.
Problem 38
How is it advantageous for animals to convert ingested starch to glucose and then to incorporate the glucose into glycogen?
Problem 42
What role does insulin play in glycogen synthesis?
Problem 43
What roles do glucagon and epinephrine play in glycogen breakdown?
