Coordination and response: endocrine system — KCSE Biology

KCSE Biology · 80 practice questions · 3 syllabus objectives

26 easy35 medium19 hard

What You'll Learn

Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.

Name endocrine glands and the hormones they secrete

Distinguish between nervous and hormonal coordination

Coordination and response: endocrine system

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easySHORT ANSWER4 marks

Name two types of cells that are primarily affected by hormones and state one effect of hormones on each type. (4 marks)

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Part (a) — 2 marks

Muscle cells (1 mk)

Adipose cells (1 mk)

Part (b) — 2 marks

Hormones stimulate muscle contraction (e.g., adrenaline) (1 mk)

Hormones promote fat storage or breakdown (e.g., insulin) (1 mk)

easySHORT ANSWER2 marks

Name two key differences between nervous coordination and hormonal coordination. (2 marks)

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Part (a) — 2 marks

Nervous coordination is rapid while hormonal coordination is slower (1 mk)

Nervous coordination has a short duration of effect while hormonal coordination has a longer-lasting effect (1 mk)

easySHORT ANSWER4 marks

Name two hormones secreted by the pancreas and describe their roles in glucose metabolism. (4 marks)

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Part (a) — 4 marks

Insulin → lowers blood glucose levels by promoting glucose uptake by cells (2 mks)

Glucagon → raises blood glucose levels by stimulating the liver to release glucose (2 mks)

Name two hormones secreted by the ovaries and state their functions. (4 marks)

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