Human reproductive system

9.Which of the following statements is true?

10.A woman has her fallopian tubes tied (tubal ligation). Which process is directly prevented?

11.Which hormone is primarily responsible for the development of male secondary sexual characteristics?

12.During the menstrual cycle, the lining of the uterus thickens. This is primarily stimulated by which hormones?

13.The diagram shows the male reproductive system. Which labelled part is the sperm duct?

14.The diagram shows the female reproductive system. Which labelled part is the uterus?

15.A woman has her fallopian tubes surgically blocked. Which of the following is directly prevented?

16.Which of the following is a function of the ovaries?

17.The table shows the number of sperm cells in semen samples from four men. Which man is most likely to be fertile?

18.A graph shows the concentration of oestrogen and progesterone in the blood during the menstrual cycle. On day 14, oestrogen peaks. What is the most likely event occurring at this time?

19.Which part of the female reproductive system is also known as the birth canal?

20.A researcher measures the thickness of the uterus lining over 28 days. The lining is thinnest on day 1 and thickest on day 21. Which hormone is most responsible for thickening the lining?

21.A couple is trying to conceive. The woman has regular menstrual cycles. Which of the following would be the best advice to increase the chance of fertilisation?

22.The diagram shows a sperm cell. Which part contains the genetic material?

23.A scientist compares the number of sperm cells produced by a man over two months. In the first month, he had a fever for one week. The sperm count was lower during that month. Which is the most likely reason?

24.A student is asked to investigate the effect of temperature on the activity of an enzyme that breaks down starch. Which of the following is the most appropriate method to measure the rate of reaction?

25.In an experiment to measure the rate of respiration in yeast, a student sets up a fermentation tube and records the volume of gas produced every 5 minutes for 30 minutes. The results are shown in the table. Which of the following is the most likely cause for the rate of gas production to slow down after 20 minutes?

26.A student wants to test a food sample for the presence of protein. Which of the following reagents should be used?

27.The diagram shows a food chain: grass → rabbit → fox. Which of the following statements about the energy transfer in this food chain is correct?

28.A student observes a sample of pond water under a microscope and sees a single-celled organism moving using cilia. Which of the following is the most likely organism?

29.In an experiment to investigate the effect of light intensity on photosynthesis, a student places a pondweed in a beaker of water and counts the number of bubbles produced per minute. Which of the following is the most appropriate way to vary the light intensity?

30.A student wants to compare the amount of vitamin C in two different fruit juices. Which of the following methods is most suitable?

31.The diagram shows a nerve cell. Which labelled part is responsible for transmitting electrical impulses away from the cell body?

32.A student tests a food sample with iodine solution and observes a blue-black colour. Which of the following nutrients is present?

33.In a reflex arc, which of the following is the correct order of transmission of a nerve impulse?

34.A student is asked to estimate the population of dandelions in a field. Which of the following methods is most appropriate?

35.A student investigates the effect of pH on the rate of an enzyme-controlled reaction. The student uses a pH buffer to maintain the pH. Which of the following is the most important reason for using a buffer?

36.A researcher measures the concentration of oestrogen in a woman's blood over 28 days. On day 14, oestrogen concentration peaks. What is the most likely event occurring around day 14?

37.A scientist compares the number of sperm cells produced by a man over two months. In the first month, the man had a fever for one week. The sperm count was lower during the month after the fever. Which is the most likely explanation?

38.Which of the following is a function of the vagina?

39.A woman is trying to conceive. Her menstrual cycle is regular, and she has a peak in oestrogen on day 14. On which days is she most likely to conceive if she has intercourse?

40.A student is asked to investigate the effect of temperature on the rate of an enzyme that breaks down starch. Which of the following is the most appropriate method to measure the rate of reaction?

41.The testes produce sperm and testosterone.

42.Fertilisation usually occurs in the vagina.

43.Sperm is carried from the testes to the urethra through the fallopian tubes.

44.Ovaries produce egg cells.

45.Which organ produces the hormone testosterone?

46.What is the name of the tube that carries sperm from the testes to the urethra?

47.Which of the following are functions of the ovaries? (Select all that apply.)

48.Match each organ with its correct function.

49.Arrange the following events in the correct order for fertilisation to occur.

50.The fallopian tubes connect the ovaries to the uterus.

51.State the name of three organs that the male reproductive system consists of.

52.State the name of four organs that the female reproductive system consists of.

53.Complete the sentence:

54.Describe the function of the uterus in the female reproductive system.

55.Describe the function of the ovaries in the female reproductive system.

56.Describe the function of the vagina in the female reproductive system.

57.Describe the function of the penis in the male reproductive system.