5.1.7 - Aerobic respiration

Question 1

What are the 2 types of anaerobic fermentation?

Answer 1

Ethanol Fermentation
Lactate Fermentation

Question 2

What type of microorganisms use ethanol fermentation?

Answer 2

Yeast
Fungi

Question 3

What type of microorganisms use lactate fermentation?

Answer 3

Bacteria
mammalian muscle

Question 4

What are some of the consequences of anaerobic respiration lacking oxygen?

Answer 4

No final acceptor of electrons in ETC
ETC stops functioning
No more ATP produced from oxidative phosphorylation

Question 5

What happens to the enzymes involved in anaerobic respiration due to a lack of oxygen?

Answer 5

Reduced NAD and FAD not oxidised by electron carriers in ETC.
No oxidised NAD And FAD available in Krebs cycle

Question 6

In ethanol fermentation, what is formed when pyruvate is decarboxylated?

Answer 6

Ethanal
carbon dioxide

Question 7

What happens after ethanal is produced in ethanol fermentation?

Answer 7

It is reduced to ethanol by the enzyme alcohol dehydrogenase.

Question 8

What are 2 main differences between ethanol and lactate fermentation?

Answer 8

In ethanol fermentation, pyruvate is decarboxylated. It’s not in lactate fermentation.
The final product of lactate can be further metabolised.

Question 9

What stage occurs in both aerobic and anaerobic respiration?

Answer 9

Glycolysis

Question 10

What type of respiration produces more energy?

Answer 10

Aerobic