Question 18
Question 18 of 40
Question image for Q18
You can solve this MCQ to see its answer, but your attempt won't be logged unless you login
No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
3. Movement into and out...
3.1. Diffusion

Describe diffusion as the net movement of particles from a region of their higher concentration to a region of their lower concentration (i.e. down a concentration gradient), as a result of their random movement

11. Gas exchange in human...
11.1. Gas exchange in humans

Describe the differences in composition between inspired and expired air, limited to: oxygen, carbon dioxide and water vapour