respiration

Question 1

What group does yeast belong to

Answer 1

fungi

Question 2

Anaerobic respiration in yeast

Answer 2

glucose > ethanol + carbon dioxide

Question 3

Why is it imporantnt to use sterile bottles

Answer 3

to remove pathogens

Question 4

What enzyme digestes starch in the barley

Answer 4

Amylase

Question 5

During the production of beer the number of live yeast cells initially increases, but then decreases towards the end of the process.Explain why the number of live yeast cells decreases towards the end of the process?

Answer 5

Less glucose and increase in ethanol

Question 6

Explain why breathing rate is higher after exercise?

Answer 6

Working muscles respire so oxygen is required to remove lattice acid and get rid of oxygen debt

Question 7

How could student modify apparatus to measure oxygen better

Answer 7

Gas syringe

Question 8

Describe how smoking damages the lungs?

Answer 8

Bronchitis
Cilia damaged
Pathogens can enter which can lead to cancer build up of tar and also emphysema which would result in less gas exchange