11-gas exchange

Question 1

adaptation of alveoli for gas exchange

Answer 1

1. A large surface area
2. A very thin surface.
3. A good blood supply.
4. Good ventilation with air

Question 2

cells that protect the respiratory system

Answer 2

1. goblet: release mucus that traps pathogens and dust
2. ciliated cells: have hair to stop dust and pathogens

Question 3

how do humans use energy from respiration

Answer 3

1. protein synthesis
2. cell division
3. movement
4. nerve impulses
5. constant body temp

Question 4

what does aerobic respiration mean

Answer 4

series of chemical reaction that use O2 to break down nutrients to release energy

Question 5

when is ANAEROBIC respiration used?

Answer 5

Respiration when there isnt enough O2 present

Question 6

what is anaerobic respiration

Answer 6

series of chemical reactions that release energy without using O2

Question 7

what is O2 debt and how does it work

Answer 7

1. if the body doesn’t have enough O2 for respiration, it produces lactic acid
2. debt is the amount of O2 needed to break down the lactic acid
3. the oxygen has high breathing rate to repay the debt by breaking down the lactic acid

Question 8

what are the products of anaerobic respiration in yeast

Answer 8

releases ethanol