16 Questions
What is the primary purpose of the catabolic reactions described in the passage?
To break down molecules (food) to release energy
Which of the following is NOT a product of the glycolysis process described in the passage?
2 FADH2 molecules
What is the primary function of the Krebs cycle (also called the citric acid cycle or tricarboxylic cycle) described in the passage?
To produce 3 high-energy molecules (ATP, NADH, FADH2)
What is the primary purpose of the electron transport chain (ETC) described in the passage?
To transfer electrons from NADH and FADH2 to oxygen
What is the primary purpose of gluconeogenesis as described in the passage?
To convert pyruvate, lactate, glycerol, alanine, or glutamine into glucose
What is the primary role of cholecystokinin (CCK) in lipid metabolism as described in the passage?
To stimulate the release of pancreatic lipase and bile salts
What is the primary difference between the absorptive state and the postabsorptive state described in the passage?
In the absorptive state, glucose is stored as glycogen, while in the postabsorptive state, glycogen is broken down.
What is the primary function of thermoregulation as described in the passage?
To maintain a constant body temperature through a negative feedback loop
Which of the following is NOT a catabolic hormone mentioned in the passage?
Insulin
What is the primary purpose of the energy released from the chemical bonds during catabolic reactions as described in the passage?
To convert ADP and inorganic phosphate into ATP
What percentage of energy used during ATP production creates heat?
60%
At what temperature is a naked human typically comfortable (thermoneutral)?
84 degrees Fahrenheit
What percentage of heat is lost through convection?
15%
Which of the following is NOT a way in which heat is transferred, according to the text?
Insulation
What percentage of energy is expended on physical activity, according to the text?
20%
How many calories are equivalent to 1 pound of fat?
3500 calories
Test your knowledge on metabolic reactions, including catabolic and anabolic processes, energy storage, and the role of ATP in the body. This quiz covers the basics of energy release and storage in biological systems.
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