IB Biology HL D2.3.7 Medical Applications Questions

Explain how isotonic plasma and tissue fluid protect body cells by preventing net osmosis, swelling, lysis and crenation in IB Biology HL D2.3.7.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Explain that isotonic plasma and tissue fluid match cell osmolarity and therefore prevent net osmosis.
  • Explain how hypotonic or hypertonic plasma or tissue fluid causes cell swelling and bursting or water loss and crenation.

IB Biology HL D2.3.7 Medical Applications Questions question 1

[Maximum number: 4]

Living organisms have mechanisms for preventing or reducing change.

Explain the need for isotonic conditions in human blood plasma and tissue fluid.

Figure for Question IB Biology HL D2.3.7 Medical Applications Questions question 1 — IB Biology HL
Figure for Question IB Biology HL D2.3.7 Medical Applications Questions question 1 — IB Biology HL
All question bank results loaded