Question:medium
During overnight fasting, what occurs?
During overnight fasting, what occurs?
Show Hint
Short fast keeps glucose up by making more of it.
Updated On: Jun 24, 2026
- Glucose decreases
- FFA increases
- Increased gluconeogenesis
- Increased beta-hydroxybutyrate
Show Solution
The Correct Option is C
Solution and Explanation
Step 1: Match each option to the correct time point of fasting. An overnight fast is short, so the dominant adaptation is glucose homeostasis rather than full ketosis.
Step 2: To hold blood glucose steady, the liver breaks down glycogen and ramps up gluconeogenesis. The increase in gluconeogenesis is therefore the expected and correct change.
Step 3: Because these processes succeed, glucose does not drop appreciably, so a fall in glucose is not the right description.
Step 4: A large rise in free fatty acids and in beta-hydroxybutyrate belongs to prolonged starvation, beginning around two to three days, so those options describe a later stage and are not the best answer here.
\[\boxed{\text{Increased gluconeogenesis}}\]
Step 2: To hold blood glucose steady, the liver breaks down glycogen and ramps up gluconeogenesis. The increase in gluconeogenesis is therefore the expected and correct change.
Step 3: Because these processes succeed, glucose does not drop appreciably, so a fall in glucose is not the right description.
Step 4: A large rise in free fatty acids and in beta-hydroxybutyrate belongs to prolonged starvation, beginning around two to three days, so those options describe a later stage and are not the best answer here.
\[\boxed{\text{Increased gluconeogenesis}}\]
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