16 Questions
What percentage of the energy used during ATP production is converted to heat?
60%
Which mode of heat transfer accounts for the largest percentage of heat loss in the human body?
Radiation
What percentage of a person's basal metabolic rate (BMR) is attributed to physical activity?
20%
Which of the following vitamins is not water-soluble?
Vitamin A
What is the caloric equivalent of 1 pound of fat?
3500 calories
Which macronutrient requires the most energy to break down in the body?
Proteins
Which of the following statements about catabolic reactions is incorrect?
The remaining energy is primarily used for anabolic reactions.
Which of the following is not a product of glycolysis?
2 FADH$_2$ molecules
In the Krebs cycle, what is the primary role of oxaloacetate?
To combine with acetyl CoA to initiate the cycle.
Which of the following statements about the electron transport chain is incorrect?
It is the primary source of ATP production in aerobic respiration.
What is the primary function of ketone bodies in the body?
To serve as an alternative fuel source when glucose is scarce.
In the urea cycle, what is the primary role of the ammonium ion?
To combine with carbon dioxide to form urea and water.
During the absorptive state, which of the following hormones plays a primary role?
Insulin
Which of the following is not a characteristic of the starvation state?
Glycogen stores are replenished from dietary carbohydrates.
Which of the following is not a function of cholecystokinin (CCK)?
Facilitating the absorption of lipids in the small intestine.
Which of the following is not a product of the Krebs cycle?
Pyruvate
Test your knowledge on metabolic reactions including catabolic and anabolic processes, energy storage and release, ATP production, and the overall overview of metabolism and nutrition. This quiz covers concepts from Chapter 24 'Metabolism and Nutrition' focusing on the breakdown and production of molecules for energy.
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