Metabolism and Catabolism Quiz

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What is the main purpose of the urea cycle?

To synthesize cholesterol and bile salts

To remove excess nitrogen from the body (correct)

To convert glucose into glycogen

To regulate body temperature

Which of the following is NOT a major mechanism of heat loss from the body?

Condensation (correct)

Radiation

Conduction

Convection

What is the primary function of ketone bodies in the absence of glucose?

To provide energy for the brain (correct)

To stimulate protein synthesis

To increase insulin production

To promote glycogen synthesis

What is the main difference between the absorptive and postabsorptive states?

The absorptive state is characterized by high insulin levels, while the postabsorptive state is characterized by low insulin levels. Signup and view all the answers

Which macronutrient requires the most energy to break down?

Proteins Signup and view all the answers

What is the primary function of catabolism?

Breaking down large molecules into smaller ones Signup and view all the answers

Which of the following is NOT a catabolic hormone?

Insulin Signup and view all the answers

What is the primary function of lipogenesis?

To convert excess acetyl CoA into storage forms of energy Signup and view all the answers

What is the main purpose of the hypothalamus in thermoregulation?

Both a and b Signup and view all the answers

What percentage of energy released from catabolism is transferred to ATP?

40% Signup and view all the answers

Which type of heat loss accounts for the largest percentage of total heat loss from the body?

Radiation Signup and view all the answers

What is the primary source of energy for cells when we need more energy than what we eat?

Stored glycogen or fat Signup and view all the answers

What is the relationship between calorie intake, calorie expenditure, and weight gain/loss?

Eating 10% more calories than used each day leads to overweight, while eating 20% more leads to obesity. Signup and view all the answers

What is the primary function of anabolism?

Using energy from catabolic reactions to build small molecules into large molecules Signup and view all the answers

What is the main function of vitamins in the body?

To facilitate biochemical reactions Signup and view all the answers

What is the primary storage form of carbohydrates in the body?

Glycogen Signup and view all the answers

What is the final electron receptor in aerobic respiration?

Oxygen Signup and view all the answers

Which hormone is responsible for cells taking up glucose from the circulatory system?

Insulin Signup and view all the answers

What is the primary function of glycolysis?

Production of ATP Signup and view all the answers

What process converts pyruvate to lactic acid in the absence of oxygen?

Anaerobic respiration Signup and view all the answers

Which enzyme converts pyruvate into acetyl CoA in the mitochondria?

Pyruvate dehydrogenase Signup and view all the answers

During lipid metabolism, what stimulates the release of pancreatic lipase and bile salts?

Cholecystokinin Signup and view all the answers

What is the primary function of the Krebs cycle in cellular respiration?

Generate ATP molecules Signup and view all the answers

Which molecule yields more energy compared to carbohydrates and proteins?

Fatty acids Signup and view all the answers

What is the primary outcome of ketogenesis?

Creation of ketone bodies Signup and view all the answers

What is the main purpose of the Cori cycle?

Convert lactic acid to glucose in muscle cells Signup and view all the answers

Metabolism and Catabolism Quiz

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Questions and Answers

What is the main purpose of the urea cycle?

Which of the following is NOT a major mechanism of heat loss from the body?

What is the primary function of ketone bodies in the absence of glucose?

What is the main difference between the absorptive and postabsorptive states?

Which macronutrient requires the most energy to break down?

What is the primary function of catabolism?

Which of the following is NOT a catabolic hormone?

What is the primary function of lipogenesis?

What is the main purpose of the hypothalamus in thermoregulation?

What percentage of energy released from catabolism is transferred to ATP?

Which type of heat loss accounts for the largest percentage of total heat loss from the body?

What is the primary source of energy for cells when we need more energy than what we eat?

What is the relationship between calorie intake, calorie expenditure, and weight gain/loss?

What is the primary function of anabolism?

What is the main function of vitamins in the body?

What is the primary storage form of carbohydrates in the body?

What is the final electron receptor in aerobic respiration?

Which hormone is responsible for cells taking up glucose from the circulatory system?

What is the primary function of glycolysis?

What process converts pyruvate to lactic acid in the absence of oxygen?

Which enzyme converts pyruvate into acetyl CoA in the mitochondria?

During lipid metabolism, what stimulates the release of pancreatic lipase and bile salts?

What is the primary function of the Krebs cycle in cellular respiration?

Which molecule yields more energy compared to carbohydrates and proteins?

What is the primary outcome of ketogenesis?

What is the main purpose of the Cori cycle?

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