Biology Quiz on Cell Processes and Digestion

Describe the process of mitosis and explain why it is important in the growth and repair of tissues.

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Define the term 'stem cell' and explain one medical use and one ethical concern linked to the use of embryonic stem cells.

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The cell cycle includes a stage where the cell grows and DNA is replicated. Describe what happens during the entire cell cycle.

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Describe the roles of the following enzymes in digestion and where in the digestive system they work: Amylase, Protease, Lipase.

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Explain how bile helps in the digestion of lipids.

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Describe the food test you would carry out to test for: (a) Sugar (b) Protein (c) Starch (d) Lipids For each, include: reagent used, method, and positive result.

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Explain how the structure of the small intestine is adapted to maximise absorption of digested food.

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Explain how the structure of arteries differs from veins, and how this relates to their function.

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Explain the significance of enzymes being ‘biological catalysts’. In your answer, describe how enzyme action works and what happens when they are denatured.

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Enzymes in the stomach and enzymes in the small intestine work best at different pH values. Explain why this is and how the body maintains these pH conditions.

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