Neco 2018 Biology Question 7

Practice essay / theory question 7 from the 2018 Neco Biology examination. This question covers Homeostasis .

Neco 2018 Biology Essay / Theory

Topic: Homeostasis

Question 7 NECO • 2018 • BIOLOGY • essay

Homeostasis is essential for the survival of organisms as it maintains the internal environment within narrow limits. Answer the following questions.

Question Parts

( a )

Explain the role of negative feedback in the regulation of blood glucose concentration. In your answer identify the sensor, integrator and effector components and describe how they interact.

( b )

A diabetic patient has impaired insulin secretion. Predict how this defect will affect the following parameters and justify your predictions: (i) Blood glucose level after a carbohydrate‑rich meal. (ii) Blood glucose level during fasting. (iii) Activity of pancreatic α‑cells.

( c )

Design a short experimental procedure to investigate the effect of ambient temperature on the rate of evaporative water loss in a mammal. State the hypothesis, the independent and dependent variables, control measures and the type of data you would collect.

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About This Question

This is Neco 2018 Biology Question 7. It is one of the essay questions from the 2018 Neco Biology examination.

The question covers Homeostasis .

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