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.

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

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

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

Explain how bile helps in the digestion of lipids.

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.

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

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

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

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.