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Metabolism and Nutrition: Overview of Metabolic Reactions

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Questions and Answers

What percentage of energy used during ATP production creates heat?

20%
60% (correct)
40%
80%

What is the thermoneutral temperature for a naked human?

90 degrees
84 degrees (correct)
78 degrees
70 degrees

Which method of heat transfer accounts for the most heat loss in the body?

Evaporation
Radiation (correct)
Conduction
Convection

What percentage of energy expended is used for basic organ function in the body?

70% (A) Signup and view all the answers

Which macronutrient uses the most energy to break down?

Proteins (D) Signup and view all the answers

Which vitamin is NOT water-soluble?

Vitamin A (C) Signup and view all the answers

What is the main purpose of the Krebs cycle?

To generate electron donors for the electron transport chain (B) Signup and view all the answers

What is the primary function of the electron transport chain (ETC)?

To pump hydrogen ions (H+) out of the mitochondrial matrix (B) Signup and view all the answers

What is the overall purpose of anabolic reactions in metabolism?

To synthesize larger molecules from smaller ones (B) Signup and view all the answers

What is the primary purpose of the Krebs cycle in the context of cellular respiration?

To generate electron donors for the electron transport chain (C) Signup and view all the answers

What is the main function of gluconeogenesis?

To produce glucose from non-carbohydrate precursors (A) Signup and view all the answers

What is the primary function of the electron transport chain (ETC) in cellular respiration?

To pump hydrogen ions (H+) out of the mitochondrial matrix (C) Signup and view all the answers

What is the overall purpose of catabolic reactions in metabolism?

To break down large molecules for energy (B) Signup and view all the answers

What is the main purpose of the Krebs cycle in the context of cellular respiration?

To generate electron donors for the electron transport chain (C) Signup and view all the answers

What is the main function of glycolysis in cellular respiration?

To convert glucose to pyruvate (B) Signup and view all the answers

What is the primary role of insulin in metabolism?

To facilitate the uptake of glucose into cells (D) Signup and view all the answers

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