Cellular Respiration and Macronutrient Metabolism Quiz

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24 Questions

What is the primary energy source for cellular respiration?

Carbohydrates

What are enzymes?

Proteins that catalyze chemical reactions

What is the unit of energy used on nutritional labels?

Kilocalorie

What does the basal metabolic rate refer to?

Energy use during rest

What is the role of activation energy in metabolic reactions?

It is the energy required to start the reaction

What is the primary product of the breakdown of fats?

Glycerol

What is the rate at which the body uses energy called?

Metabolic rate

What is the resting energy use in males per day?

1680 Cal

What is the energy required to raise 1 g of water by 1°C?

Calorie

What are the subunits of proteins and fats broken down into?

Amino acids

What is the energy barrier to catalysis that enzymes work by lowering?

Activation energy

What is the primary energy source for swimming?

3.00

What is the healthy range for Body Mass Index (BMI)?

20-25

Which type of diabetes is typically not due to obesity?

Type 1

What is the normal range for blood pressure?

120/80

Where does glycolysis occur?

Cytosol

In the presence of oxygen, what type of respiration occurs?

Aerobic respiration

What is the main product of cellular respiration?

Carbon dioxide

What is the function of the citric acid cycle?

Convert pyruvate to CO2 and H2O

What happens in anaerobic respiration?

Energy formation without O2

What is the main difference between aerobic and anaerobic exercise?

Oxygen availability

What is the primary product of the initial step of cellular respiration (glycolysis)?

ATP

In which organelle does oxidative phosphorylation occur?

Mitochondrion

Which type of diabetes may develop just during pregnancy and resolve after childbirth?

Gestational

Study Notes

Cellular Respiration and Energy

  • The primary energy source for cellular respiration is glucose.
  • The unit of energy used on nutritional labels is the calorie.
  • The rate at which the body uses energy is called the metabolic rate.
  • The basal metabolic rate refers to the minimum amount of energy required by the body at rest.

Enzymes and Catalysis

  • Enzymes are biological molecules that speed up metabolic reactions.
  • The role of activation energy in metabolic reactions is to overcome the energy barrier for catalysis.
  • Enzymes work by lowering the activation energy barrier.

Fats and Proteins

  • The primary product of the breakdown of fats is fatty acids.
  • The subunits of proteins and fats are broken down into amino acids and fatty acids, respectively.

Physiology and Health

  • The resting energy use in males per day is approximately 1,900 calories.
  • The energy required to raise 1 g of water by 1°C is 1 calorie.
  • A healthy range for Body Mass Index (BMI) is between 18.5 and 24.9.
  • Type 1 diabetes is typically not due to obesity.
  • The normal range for blood pressure is 90-120 mmHg systolic and 60-80 mmHg diastolic.

Cellular Respiration Processes

  • Glycolysis occurs in the cytoplasm of cells.
  • In the presence of oxygen, aerobic respiration occurs.
  • The main product of cellular respiration is ATP (adenosine triphosphate).
  • The function of the citric acid cycle is to generate ATP and NADH.
  • In anaerobic respiration, glucose is broken down into lactic acid.
  • The main difference between aerobic and anaerobic exercise is the presence of oxygen.

Additional Facts

  • The primary product of the initial step of cellular respiration (glycolysis) is pyruvate.
  • Oxidative phosphorylation occurs in the mitochondria.
  • Gestational diabetes may develop just during pregnancy and resolve after childbirth.

Test your knowledge of cellular respiration and macronutrient metabolism with this quiz. Explore the breakdown pathways of carbohydrates, proteins, and fats, and understand how their subunits feed into the carbohydrate breakdown pathway. Identify the key players in glycolysis, and the role of enzymes in metabolism.

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