Pearson Edexcel GCSE (9-1) · Combined Science (1SC0)

Animal coordination, control and homeostasis: Practice Questions

5 multiple-choice questions marked as you go, and 3 written questions with worked solutions. All on Animal coordination, control and homeostasis.

8 questions22 marksFree, no account

Question 1

1 mark

During the menstrual cycle, the levels of different hormones fluctuate to control the uterus wall and ovulation. Which statement correctly describes the interaction between these hormones during the follicular phase?

Question 2

1 mark

How does the body prepare for a 'fight or flight' response when adrenalin is released from the adrenal glands?

Question 3

1 mark

A person with Type 1 diabetes is unable to produce insulin. If this person consumes a meal high in carbohydrates without treatment, what happens to the glucose levels and the role of the pancreas?

Question 4

1 mark

A doctor calculates a patient's BMI to assess their risk for Type 2 diabetes. If the patient has a mass of 90 kg and a height of 1.8 m, which of the following is their BMI and the most likely metabolic relationship?

Question 5

1 mark

A patient is diagnosed with hyperthyroidism, a condition where the thyroid gland is overactive. Which of the following would be an expected physiological consequence based on the negative feedback loop involving thyroxine?

Question 6

5 marks

Describe the sequence of hormone interactions in the negative feedback loop that maintains a constant metabolic rate when thyroxine levels in the blood become too low.

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Question 7

6 marks

Explain how the interaction of FSH, LH, oestrogen, and progesterone coordinates the thickening of the uterus lining and the timing of ovulation during the menstrual cycle.

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Question 8

6 marks

Adrenalin and thyroxine are two hormones involved in the regulation of the body.
(a) Explain how adrenalin prepares the body for a 'fight or flight' response by affecting heart rate and liver function.
(b) Explain how the production of thyroxine is controlled by a negative feedback loop involving the hypothalamus and the pituitary gland.

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