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IB Biology HL 2.3.7 Adaptations Increasing Surface Area Question Bank

Practise IB Biology HL 2.3.7 through exact HL questions on microvilli, mitochondria, transport proteins and tissue adaptations for absorption and reabsorption.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Analyse how microvilli, mitochondria, transport proteins and tissue geometry increase absorption efficiency.
  • Use intestinal and nephron examples to explain why increased surface area supports reabsorption.
  • Evaluate how cell and organelle adaptations match the demands of nutrient or glucose uptake.

B2.3.7 (HL)—Adaptations to increase SA:V question 1

[Maximum number: 1]

The micrograph shows part of a cell.

Figure for Question B2.3.7 (HL)—Adaptations to increase SA:V question 1 — IB Biology HL

Which principal function is this cell likely to have, as judged by its cell structure and organelles?

A

High rate of protein processing

B

High rate of absorption

C

High rate of photosynthesis

D

High rate of movement

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