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IB Biology HL C2.1.3 Hl Functional Categories in Animals Questions

Compare how hormones and nervous signals travel, differ in speed and target cells, then trace how adipose-derived leptin acts on the hypothalamus to reduce food intake.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Compare hormonal and nervous communication by signal type, route, speed, duration and target range.
  • Use leptin to explain how a hormone released by adipose tissue acts on hypothalamic target cells to reduce food intake.

IB Biology HL C2.1.3 Hl Functional Categories in Animals Questions question 1

[Maximum number: 1]

What releases leptin?

A

Thyroid gland

B

Hypothalamus

C

Pineal gland

D

Adipose tissue

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