Biology - Paper 2

Question 1

Explain the use of progesterone in the treatment of infertility.

Answer 1

Maintains uterus lining which means an increased chance of implantation.

Question 2

Explain the use of LH in the treatment of infertility.

Answer 2

Stimulates ovulation which allows eggs to be collected from ovary so more chance of fertilising an egg.

Question 3

Explain the use of FSH in the treatment of infertility.

Answer 3

Stimulates egg maturity which increases the number of eggs that are mature.

Question 4

Define homeostasis.

Answer 4

Regulation of internal conditions for optimum conditions for cells.

Question 5

Name uses of auxin, ethene and giberellin.

Answer 5

Auxin = To ripen fruit
Ethene = Controls cell division
Giberellin = Promotes flowering and helps plants to grow more and bigger fruits

Question 6

Name the differences between the endocrine and nervous system.

Answer 6

Endocrine = Hormones via blood
Nervous = Chemical transmission

Question 7

Describe the effects of thyroxine in the body.

Answer 7

-Increases the body’s metabolic rate
-Increases protein synthesis
-Stops TSH production