Fertilisation in human beings Practice exercise 3

Describe the process of fertilisation in human beings.  (3 marks)

Describe the process of fertilisation in human beings.  (3 marks)

The image below shows sperm swimming toward an ovum in the fallopian tube. Explain why only one sperm is able to successfully fertilise the ovum.   (2 marks)

The image below shows sperm swimming toward an ovum in the fallopian tube. Explain why only one sperm is able to successfully fertilise the ovum.   (2 marks)

Explain why millions of sperm cells are released during ejaculation, but only one fertilises the egg.  (2 marks)

Explain why millions of sperm cells are released during ejaculation, but only one fertilises the egg.  (2 marks)

The diagram shows parts of the female reproductive system labeled A, B, C, D, E, and F. (a) Identify the part where fertilisation normally occurs. (1 mark)(b) Explain why fertilisation does not usually take place in the uterus. (2 marks)(c) If part A were blocked, explain the effect on fertilisation and justify your answer.  (2 marks)

The diagram shows parts of the female reproductive system labeled A, B, C, D, E, and F. (a) Identify the part where fertilisation normally occurs. (1 mark)(b) Explain why fertilisation does not usually take place in the uterus. (2 marks)(c) If part A were blocked, explain the effect on fertilisation and justify your answer.  (2 marks)

The diagram shows parts of the female reproductive system labeled A, B, C, D, E, and F. (a) Identify the part where fertilisation normally occurs. (1 mark)(b) Explain why fertilisation does not usually take place in the uterus. (2 marks)(c) If part A were blocked, explain the effect on fertilisation and justify your answer.  (2 marks)

The diagram shows parts of the female reproductive system labeled A, B, C, D, E, and F. (a) Identify the part where fertilisation normally occurs. (1 mark)(b) Explain why fertilisation does not usually take place in the uterus. (2 marks)(c) If part A were blocked, explain the effect on fertilisation and justify your answer.  (2 marks)

The diagram shows parts of the female reproductive system labeled A, B, C, D, E, and F. (a) Identify the part where fertilisation normally occurs. (1 mark)(b) Explain why fertilisation does not usually take place in the uterus. (2 marks)(c) If part A were blocked, explain the effect on fertilisation and justify your answer.  (2 marks)

The diagram shows parts of the female reproductive system labeled A, B, C, D, E, and F. (a) Identify the part where fertilisation normally occurs. (1 mark)(b) Explain why fertilisation does not usually take place in the uterus. (2 marks)(c) If part A were blocked, explain the effect on fertilisation and justify your answer.  (2 marks)

The diagram shows the structure of a sperm cell labeled A, B, C, and D. (a) Name the parts labeled A and D. (2 marks)(b) Explain the role of part B during fertilisation. (1 mark)(c) If part D was damaged, explain the consequence for fertilisation. (2 marks)

The diagram shows the structure of a sperm cell labeled A, B, C, and D. (a) Name the parts labeled A and D. (2 marks)(b) Explain the role of part B during fertilisation. (1 mark)(c) If part D was damaged, explain the consequence for fertilisation. (2 marks)

The diagram shows the structure of a sperm cell labeled A, B, C, and D. (a) Name the parts labeled A and D. (2 marks)(b) Explain the role of part B during fertilisation. (1 mark)(c) If part D was damaged, explain the consequence for fertilisation. (2 marks)

The diagram shows the structure of a sperm cell labeled A, B, C, and D. (a) Name the parts labeled A and C. (2 marks)(b) Explain the role of part B during fertilisation. (1 mark)(c) If part C was damaged, explain the consequence for fertilisation. (2 marks)

The diagram shows the structure of a sperm cell labeled A, B, C, and D. (a) Name the parts labeled A and C. (2 marks)(b) Explain the role of part B during fertilisation. (1 mark)(c) If part C was damaged, explain the consequence for fertilisation. (2 marks)

A man had an accident that damaged the nerves controlling his ejaculation, making it difficult for sperm to be released.Explain how this condition affects fertilisation.  (2 marks)

A man had an accident that damaged the nerves controlling his ejaculation, making it difficult for sperm to be released.Explain how this condition affects fertilisation.  (2 marks)

A man had an accident that damaged the nerves controlling his ejaculation, making it difficult for sperm to be released. Explain how this condition affects fertilisation.  (2 marks)

A woman went for a medical checkup and was told that her cervical mucus is extremely thick due to hormonal imbalance. Explain how this condition can prevent fertilisation from occurring.  (2 marks)

A woman went for a medical checkup and was told that her cervical mucus is extremely thick due to hormonal imbalance. Explain how this condition can prevent fertilisation from occurring.  (2 marks)

A woman went for a medical checkup and was told that her cervical mucus is extremely thick due to hormonal imbalance. Explain how this condition can prevent fertilisation from occurring.  (2 marks)

A biology teacher displayed this image of a newly fertilised egg dividing into two cells. Explain why the fertilisation stage is critical before this division can happen.  (2 marks)

A biology teacher displayed this image of a newly fertilised egg dividing into two cells. Explain why the fertilisation stage is critical before this division can happen.  (2 marks)

A couple in Mombasa has been unable to conceive, and medical tests show that the man produces very few active sperm. Explain how having very few active sperm affects fertilisation.  (2 marks)

A couple in Mombasa has been unable to conceive, and medical tests show that the man produces very few active sperm. Explain how having very few active sperm affects fertilisation.  (2 marks)

During a hospital fertility workshop, a doctor displayed the image and explained that sometimes multiple sperm reach the ovum at the same time. Explain the danger if two sperm were to fertilise the ovum instead of one.  (2 marks)

During a hospital fertility workshop, a doctor displayed the image and explained that sometimes multiple sperm reach the ovum at the same time. Explain the danger if two sperm were to fertilise the ovum instead of one.  (2 marks)

During a hospital fertility workshop, a doctor displayed the image and explained that sometimes multiple sperm reach the ovum at the same time. Explain the danger if two sperm were to fertilise the ovum instead of one.  (2 marks)