Aerobic and anaerobic respiration

9.What is the main difference between aerobic and anaerobic respiration?

10.Which of the following is a use of anaerobic respiration in yeast?

11.A student observes that after a 100 m sprint, a runner's breathing rate remains high for several minutes. Which process explains this?

12.Which of the following correctly compares the energy released by aerobic and anaerobic respiration?

13.What is the correct word equation for aerobic respiration?

14.During anaerobic respiration in humans, which substance is produced that can cause muscle fatigue?

15.A student investigates respiration in yeast by mixing yeast with glucose solution in a sealed container and measuring the volume of gas produced over 30 minutes. Which gas is being produced?

17.During a 100 m sprint, an athlete's muscles use anaerobic respiration. After the race, the athlete breathes heavily for several minutes. What is the main purpose of this increased breathing?

18.Which of the following statements about anaerobic respiration in yeast is correct?

19.A baker uses yeast in bread dough. The dough rises because of gas produced during anaerobic respiration. Which gas causes the dough to rise?

20.The diagram shows a mitochondrion. Which process occurs in this organelle?

21.A student sets up the apparatus shown to investigate respiration in yeast. Which change would indicate that respiration is occurring?

22.A marathon runner uses aerobic respiration for most of the race. However, during a final sprint, the runner's muscles switch to anaerobic respiration. Which of the following best explains why this switch occurs?

23.A student sets up an experiment to investigate anaerobic respiration in yeast. Yeast cells are mixed with glucose solution in a sealed container with a delivery tube leading to a beaker of limewater. After 30 minutes, the limewater turns milky. Which gas produced by the yeast causes this change?

24.In an experiment, a student measures the volume of gas produced by yeast in glucose solution at different temperatures. The results show that at 15°C, 5 cm³ of gas is produced in 10 minutes; at 25°C, 12 cm³; at 35°C, 20 cm³; and at 45°C, 8 cm³. Which statement best explains the decrease in gas production at 45°C?

25.A student investigates the effect of pH on anaerobic respiration in yeast. They add yeast to glucose solutions buffered at different pH values and measure the volume of gas produced after 20 minutes. Which of the following is a control variable in this experiment?

26.Which of the following is the correct word equation for anaerobic respiration in yeast?

27.After a 100 m sprint, an athlete breathes heavily for several minutes. Which of the following best explains why this is necessary?

28.A student uses a respirometer to measure the rate of aerobic respiration in germinating seeds. The apparatus includes a container with soda lime to absorb carbon dioxide. After 10 minutes, the coloured liquid in the capillary tube moves towards the seeds. What does this movement indicate?

29.In an experiment, a student compares the energy released by aerobic and anaerobic respiration. They burn a known mass of glucose in oxygen and measure the temperature rise in water. They also mix glucose with yeast in anaerobic conditions and measure the temperature rise. Which of the following is a valid conclusion from the experiment?

30.Where does anaerobic respiration take place in a cell?

31.Which of the following is a similarity between aerobic and anaerobic respiration?

32.A baker notices that bread dough rises when left in a warm place. Which process causes the dough to rise?

33.A student designs an experiment to compare the rate of anaerobic respiration in yeast at two different temperatures. They use the same volume of yeast suspension and glucose solution in each setup. Which of the following would improve the validity of the experiment?

34.Which of the following is a product of aerobic respiration?

35.Which of the following is a product of anaerobic respiration in humans?

36.Which of the following statements about aerobic and anaerobic respiration is correct?

37.What is the word equation for anaerobic respiration in yeast?

38.After intense exercise, an athlete breathes heavily to repay an 'oxygen debt'. What is the main purpose of this extra oxygen?

40.Which of the following best describes anaerobic respiration?

41.Aerobic respiration occurs without oxygen.

42.Anaerobic respiration produces more energy than aerobic respiration.

43.Lactic acid can cause muscle fatigue and soreness.

44.Yeast undergo anaerobic respiration during fermentation.

45.Only animal cells carry out aerobic respiration.

46.Which of the following is an example of when anaerobic respiration occurs in humans?

47.Match each type of respiration with its correct location in the cell.

48.Arrange the following steps in the correct order to describe what happens during a sprint and recovery:

49.Which of the following are products of anaerobic respiration in yeast? (Select all that apply)

50.Aerobic respiration releases more energy per glucose molecule than anaerobic respiration.

51.State the products of aerobic respiration.

52.State which organelle carries out aerobic respiration.

53.State the products of anaerobic respiration in humans.

54.State where anaerobic respiration occurs in the cell.

55.Write the word equation for aerobic respiration.

56.Write the word equation for anaerobic respiration in humans.

57.Aerobic respiration releases 16 kJ of energy per gram of glucose. If a runner uses 100 g of glucose during a marathon, how much energy (in kJ) is released?

58.Complete the word equation for aerobic respiration.

59.Describe the differences between aerobic and anaerobic respiration.

60.Aerobic respiration releases 16 kJ of energy per gram of glucose. If a runner uses 100 g of glucose during a marathon, how much energy (in kJ) is released?