B1 exam questions

Question 1

Explain 3 advantages of red blood cells passing through a capillary one at a time
(B1- cell structure)

Answer 1

1. more oxygen released to tissues
2. shorter exchange distance
3. more surface area exposed

Question 2

how do guard cells help assist photosynthesis? (2)

Answer 2

1. controls by osmosis
2. the movement of gases

Question 3

how do palisade cells help assist photosynthesis?

Answer 3

1. near the upper surface
2. contain many chloroplast so contain the most chlorophyll