Reproduction in Humans

Question 1

Explain how a sperm is adapted for its function?

Answer 1

Flagellum/ tail for movement
Small/ streamlined for efficient swimming
Mitochondria for providing energy
Acrosome for digestion of follicle cells to reach ovum
Haploid nucleus to fuse with egg nucleus
Has a nucleus to transfer genetic information to zygote

Question 2

Why does the egg cell contain stores of protein and fat?

Question 3

Function of the jelly coat

Question 4

Site of production of testosterone and oestrogen?

Answer 4

Testes
Ovary

Question 5

Secondary sexual characteristics due to t.t.

Answer 5

Facial hair
Public hair
Broadening of shoulders
Deepening of voice

Question 6

Secondary sexual characteristics due to oestrogen?

Answer 6

Growth of breasts
Pubic hair
Widening of hips
Fat deposition

Question 7

Why does a reduction in the diameter of urethra cause problems?

Answer 7

Reduction in flow of urine
Difficult to empty bladder
Painful
Need to urinate often
Increased risk of infection
Difficult to ejaculate

Question 8

Gland that secreted testosterone?

Answer 8

Testes