ConceptConceptDocsDocuments

IB Biology SL 2.2.7 Processes of Life in Unicellular Organisms

Practise IB Biology SL 2.2.7 by identifying life functions in unicellular organisms and linking Paramecium structures to homeostasis.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Identify life functions shared by unicellular organisms, including metabolism, response, growth and homeostasis.
  • Explain how a contractile vacuole supports homeostasis and osmoregulation in Paramecium.
  • Distinguish universal life functions from processes such as photosynthesis or ventilation.

A2.2.7—Processes of life in unicellular organisms question 1

[Maximum number: 1]

Single-celled organisms of the genus Paramecium carry out all functions of life.

Figure for Question A2.2.7—Processes of life in unicellular organisms question 1 — IB Biology SL

Which functions of life are performed by the contractile vacuole?

A

Nutrition

B

Reproduction

C

Homeostasis

D

Metabolism

All question bank results loaded