Neco Model Questions Vol1 2022 Biology Question 7

Practice essay / theory question 7 from the 2022 Neco Model Questions Vol1 Biology examination. This question covers Homeostasis .

Neco Model Questions Vol1 2022 Biology Essay / Theory
Topic: Homeostasis
Question 7 NECO_MODEL_QUESTIONS_VOL1 • 2022 • BIOLOGY • essay

Homeostasis is essential for maintaining the internal environment of the human body within narrow limits.

Question Parts

( a )
Describe the general principle of negative feedback and give two distinct examples of negative feedback mechanisms in humans, explaining the sensor, integrator and effector in each.
( b )
Compare negative feedback with positive feedback by discussing (i) the physiological situations in which each operates, (ii) the consequences for the controlled variable, and (iii) why positive feedback is limited in duration.
( c )
A patient suffers from a defect in the pancreatic β‑cells that reduces insulin secretion by 60 % of normal. Predict the short‑term and long‑term effects on blood glucose concentration, glycogen storage, and body weight. Justify your predictions with reference to the relevant feedback loops.

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About This Question

This is Neco Model Questions Vol1 2022 Biology Question 7. It is one of the essay questions from the 2022 Neco Model Questions Vol1 Biology examination.

The question covers Homeostasis .

View More Neco Model Questions Vol1 2022 Biology Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

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