B3b Diffusion Questions

B3b Diffusion Questions paper

HideShow resource information
  • Created by: Amira
  • Created on: 02-05-12 09:04
Preview of B3b Diffusion Questions

First 162 words of the document:

B3b Diffusion
1. The diffusion is the net movement of particles from an area of ................
concentration to an area of lower concentration. It is a natural process.
2. Enzymes control and ................ many chemical reactions in living things. Which of
the following process that is not controlled by enzymes.
Protein synthesis / photosynthesis / diffusion / respiration
3. Substances such as oxygen can enter and leave cells by ................ .
Look at the diagrams of five cells.
The dots show the concentration of oxygen.
Which diagram shows the diffusion of oxygen?
Choose A, B, C, D or E.
.......................................................................................................................................
Higher only:
4. The diagrams show air sacs from the lungs of three different people.
(i) What is the scientific name for the air sacs in lungs?
......................................................................................................................................
(ii) Look at the diagrams.
Ed has the greatest rate of diffusion of oxygen into his blood.
Describe two reasons why.
1 .......................................................................................................................................
..........................................................................................................................................
2 .......................................................................................................................................
................................................................................................................................................
.........

Comments

lisa linsdell

Exam style questions for this topic, Higher paper questions clearly identified. Download separate documents for the answers.

هزل, يتبادل المزاح

الله أكبر

Similar Science resources:

See all Science resources »See all resources »