Fertilisation

Question 1

Where does the egg travel too after ovulation?

Answer 1

The fertilisation zone

Question 2

What happens to the sperm when it reaches the Fallopian tubes?

Answer 2

Capacitation who h takes 6-7 hours where the glycoproteins are removed from the acrosomal cap to allow an acrosomal reaction to occur

Question 3

What attracts the sperm to the egg? (2mks)

Answer 3

Chemotactic and thermostatic chemicals

Question 4

Describe the two types of polyspermy blocks (4mks)

Answer 4

1) Fast polyspermy- uses an electric current

2) Slow polyspermy- uses enzymes to harden zona pellucida