Multiple Choice
Which of the following is a characteristic feature of metabolic syndrome?
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7. Energy and Metabolism
Introduction to Metabolism
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Which physiological change occurred in Jon Reiner’s body as a result of not eating?
A
His blood glucose levels increased significantly.
B
His metabolic rate increased dramatically.
C
His body began breaking down stored fat for energy.
D
His body started synthesizing new glycogen stores.
Verified step by step guidance1
Understand the context of the problem: Jon Reiner's body is responding to a lack of food intake, which triggers physiological changes to maintain energy balance.
Recall the body's response to fasting: When food is not consumed, the body shifts from using glucose as its primary energy source to alternative sources, such as stored fat.
Review the process of glycogen usage: Initially, the body uses glycogen stored in the liver and muscles for energy. However, glycogen stores are limited and deplete quickly during fasting.
Explain fat metabolism: After glycogen is depleted, the body begins breaking down stored fat through lipolysis. Fat is converted into fatty acids and glycerol, which are further processed to produce energy via cellular respiration.
Clarify why other options are incorrect: Blood glucose levels do not increase during fasting; they decrease. Metabolic rate typically decreases to conserve energy, and the body does not synthesize new glycogen stores during fasting because it lacks the necessary glucose input.
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