How does AMP affect the activity of PFK1 and fructose 1,6-bisphosphatase?

• A. AMP has no effect on either enzyme.
• B. AMP inhibits both PFK1 and fructose 1,6-bisphosphatase.
• C. AMP stimulates PFK1 and inhibits fructose 1,6-bisphosphatase.
• D. AMP inhibits PFK1 and stimulates fructose 1,6-bisphosphatase.

Answer: (C)