Pages in this set

Page 1

Preview of page 1
B3 REVISION NOTES
ACTIVE TRANSPORT
Substances get in and out of cells through
1. Diffusion
2. Osmosis
3. Active transport
A cell may need to take up a substance against the concentration gradient. This involves
energy and is called `active transport'.
It is the only one of the tree methods…

Page 2

Preview of page 2
Red blood cells transport oxygen.
Blood plasma transports carbon dioxide, urea and the products of digestion.

THE EFFECT OF EXXCERCISE ON THE BODY
During exercise muscles need more energy.
More glucose and oxygen need to be transported to the muscles.
To do this there are changed in heart rate, in…

Page 3

Preview of page 3
Microorganisms can be grown on a large scale in industrial fermenters.
The conditions in a fermenter must be very carefully controlled.
A mycoprotein can be produced using the fungus Fusarium.

ANTIBIOTIC PRODUCTION
They are produced in Fermenters.
The mould penicillin produces the antibiotic.

BIOGAS
Biogas is mainly methane.
It is…

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »