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IB Biology HL C2.1.14 Hl Regulation By Feedback Questions

Use temperature and hormone-control questions to identify negative feedback: the response opposes a change and helps return conditions toward normal.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify negative feedback when a response opposes an initial change and returns a regulated condition toward normal.
  • Recognize hormonal negative feedback when high estrogen inhibits FSH secretion.

IB Biology HL C2.1.14 Hl Regulation By Feedback Questions question 1

[Maximum number: 1]

What is an example of negative feedback in the menstrual cycle?

A

High levels of estrogen inhibit FSH secretion.

B

High levels of LH stop progesterone secretion.

C

High levels of FSH delay ovulation.

D

High levels of progesterone make follicles less receptive to FSH.

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