Photo AI
Endocrine glands produce hormones - AQA - GCSE Biology - Question 10 - 2018 - Paper 1
Question 10
Endocrine glands produce hormones. 10.1 Hyperthyroidism is caused by an overactive thyroid gland. Suggest what would happen in the body of a person with hyperthyroi... show full transcript
Worked Solution & Example Answer:Endocrine glands produce hormones - AQA - GCSE Biology - Question 10 - 2018 - Paper 1
Step 1
Suggest what would happen in the body of a person with hyperthyroidism.
Answer
In individuals with hyperthyroidism, an excessive amount of thyroxine is released into the bloodstream. This leads to an increase in the basal metabolic rate (BMR). As a result, the body may experience an increased formation of glycogen, lipids, or proteins, alongside heightened rates of respiration, or an increase in the breakdown of excess proteins.
Step 2
Describe the roles of FSH and LH in the menstrual cycle.
Answer
Follicle-stimulating hormone (FSH) is crucial as it stimulates the maturation of eggs and the production of oestrogen by the ovaries. Luteinizing hormone (LH) plays a vital role in triggering the release of the matured egg from the ovary.
Step 3
Explain why missing a dose of the mini-pill would reduce the success rate of the mini-pill.
Answer
Missing a dose of the mini-pill causes a drop in progesterone levels. This leads to the inhibition of FSH, which is necessary for preventing ovulation. Consequently, if FSH is not inhibited, LH will not be inhibited either, resulting in the maturation and potential fertilization of an egg.