PRACTISE Qs & IDEAL ANSWERS Flashcards
(6 cards)
1
Q
Draw and label an animal cell
A
Pic
2
Q
Draw and label a plant cell
A
Pic
3
Q
What are enzymes?
3
A
Enzymes are tiny protein molecules (1) that speed up chemical reactions (1) without being used up in the process (1)
4
Q
What determines the rate of diffusion?
4
A
concentration gradient (1), temperature (1), surface area (1), distance (1)
5
Q
How can the rate of diffusion or osmosis be increased?
4
A
increasing the surface area (1), decreasing the diffusion distance (1), a greater concentration gradient (1), increasing the temperature (1)
6
Q
Describe and compare adult and embryonic stem cells
A
Hah
