Absorption of materials

Question 1

the bloodstream delivers to cells;

Answer 1

glucose and oxygen for respiration to produce PROTEIN

Question 2

Fatty acids and glycerol

Answer 2

to make cell membranes

Question 3

All tissues a

have Capillary network of blood vessels to

Answer 3

allow the efficient exchange of material

Question 4

Features of exchange surfaces:

Answer 4

1. A large surface area
2. Very thin
3. Extensive capillary network

Question 5

Features of Alveoli:

Answer 5

1. large surface area
2. surrounded by a dense network of Blood Capillaries
3. ONE CELL THICK

Question 6

Gas exchange in lung through thin walled:

Answer 6

Air sacs called ALVEOLI