IB Diploma Programme (DP) - SL & HL · Biology

C3.1 Integration of body systems (Organisms): Practice Questions

5 multiple-choice questions marked as you go, and 3 written questions with worked solutions. All on C3.1 Integration of body systems (Organisms).

8 questions15 marksFree, no account

Question 1

1 mark

In the context of the integration of body systems, how does the nervous system primarily coordinate with the endocrine system to maintain homeostasis during a drop in blood glucose levels?

Question 2

1 mark

Which of the following describes the homeostatic response when blood glucose levels fall below the normal range (approximately \(4-8\) mmol/dm\(^3\))?

Question 3

1 mark

The hypothalamus integrates the nervous and endocrine systems by controlling the pituitary gland. Which statement correctly distinguishes the communication pathway to the anterior versus the posterior pituitary?

Question 4

1 mark

During vigorous physical exercise, which physiological change is primarily responsible for the increase in ventilation rate?

Question 5

1 mark

Which of the following is a direct consequence of insulin binding to its specific receptors on target cells?

Question 6

2 marks

Distinguish between the nervous system and the endocrine system in terms of the method and speed of signal transmission during the integration of body systems.

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Question 7

3 marks

Identify the primary chemical stimulus detected by central chemoreceptors in the medulla and describe the resulting change in the ventilation rate to maintain blood pH homeostasis.

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Question 8

5 marks

Explain how the hypothalamus and posterior pituitary gland collaborate to regulate water balance in the body, specifically mentioning the role of a hormone.

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