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Questions and Answers
Which enzyme plays a central role in energy metabolism and is activated by an increase in a cell's AMP:ATP ratio?
Which enzyme plays a central role in energy metabolism and is activated by an increase in a cell's AMP:ATP ratio?
- Lipase
- AMP-activated protein kinase (AMPK) (correct)
- Amylase
- PFK-2
What effect does AMPK have on anabolic pathways?
What effect does AMPK have on anabolic pathways?
- Switches them on
- Has no effect on them
- Activates them
- Switches them off (correct)
In cardiac cells, how does AMPK stimulate glycolysis?
In cardiac cells, how does AMPK stimulate glycolysis?
- By decreasing glucose transporters
- By reducing ATP levels
- By activating PFK-2 (correct)
- By inhibiting PFK-2
What is the function of insulin in terms of glucose transport across the plasma membrane of target cells?
What is the function of insulin in terms of glucose transport across the plasma membrane of target cells?
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Which molecule regulates de novo fat synthesis from excess glucose molecules?
Which molecule regulates de novo fat synthesis from excess glucose molecules?
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What is the process that AMPK promotes in cardiac and skeletal muscle to increase glycolysis?
What is the process that AMPK promotes in cardiac and skeletal muscle to increase glycolysis?
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Which regulatory pathway does AMPK switch off?
Which regulatory pathway does AMPK switch off?
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