Life Science Quiz: Food and Oxidation

What is the main difference between mechanical and chemical digestion?

• Mechanical digestion involves physical breakdown, while chemical digestion involves enzymes.

• Chemical digestion involves physical breakdown, while mechanical digestion involves enzymes.

• Both involve enzymes but in different parts of the digestive system.

• Mechanical digestion involves enzymes, while chemical digestion does not.

Which process is directly involved in the conversion of glucose into energy in cells?

• Photosynthesis

• Oxidation

• Cellular respiration

• Fermentation

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How are oxidation and cellular respiration related?

• They are unrelated processes.

• Cellular respiration is a part of oxidation.

• Both occur only in plants.

• Oxidation is a part of cellular respiration.

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What is the relationship between cellular respiration and photosynthesis?

• Photosynthesis converts energy into glucose, while cellular respiration converts glucose into energy.

• They are identical processes.

• Both processes occur in the mitochondria.

• Cellular respiration occurs only in plants, while photosynthesis occurs only in animals.

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Which of the following is a product of cellular respiration?

• Oxygen

• Carbon dioxide

• Chlorophyll

• Glucose

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Which organ is primarily responsible for the absorption of nutrients during digestion?

• Stomach

• Esophagus

• Small intestine

• Large intestine

What is the role of enzymes in the digestive system?

• They provide energy for digestion.

• They absorb water from food.

• They transport nutrients to cells.

• They break down food into smaller molecules.

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Which of the following processes releases carbon dioxide as a byproduct?

• Photosynthesis

• Fermentation

• Cellular respiration

• Glycolysis

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What is the primary function of the large intestine in the digestive system?

• Production of bile

• Absorption of water

• Absorption of nutrients

• Secretion of digestive enzymes

Which molecule is the final electron acceptor in the electron transport chain during cellular respiration?

• Glucose

• ATP

• Oxygen

• Carbon dioxide

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