Metabolism and Enzymes

Question 1:Diagram I shows the organelles involved during the synthesis and secretion of an enzyme in an animal cell.(a) Name the organelles labelled J and L.(b)(i) State the function of organelle M.(b)(ii) Explain the role of organelle K in the synthesis of the enzyme.(c)Enzymes are widely used in our daily life and industries.Explain how enzymes … Read more

Question 5:(a) If you are a food entrepreneur, suggest an enzyme that you can use to process meat and fish. State the function of this enzyme.(b) Discuss how the characteristics of the enzymes can influence its action. Answer:(a) The enzyme that is used in meat processing is protease. Protease helps to tenderise meat. The enzyme … Read more

Question 1:Some chefs sometimes wrap meat in papaya leaves and the meat is marinated for 5 hours before it is cooked. What is the purpose of wrapping with papaya leaves? Answer:To tenderise meat. Question 2:Why are apples that have been boiled after they are peeled, do not change colour to brown? Answer:Apples contain a type … Read more

Question 1:How are enzymes produced? Answer:Enzymes are extracted from natural resources such as bacteria or are produced synthetically in factories. Question 2:How does immobilized enzyme technology help to accelerate the enzyme reaction? Answer:Through the immobilized enzyme technology, enzymes are attached to inert materials that enables increased resistance to changes in factors such as temperature and … Read more

Question 1:What will happen if ribosomes in a pancreas cell do not function? Answer:Trypsin is not synthesised therefore protein digestion is slower. Question 2:Why must our body temperature be maintained at 37°C? Answer:This is because the optimal temperature of enzymes is 37 °C. Question 3:What is the optimum pH for a pepsin enzyme action? Answer:pH … Read more