Anaerobic Respiration

Question 1

Name the two types of anaerobic respiration

Answer 1

Ethanol fermentation and lactate fermentation

Question 2

Describe ethanol fermentation

Answer 2

Pyruvate (produced in glycolysis) is decarboxylated and to produce ethanal. Ethanal is then reduced by the enzyme alcohol dehydrogenase to form ethanol.

Question 3

What’s the first stage in anaerobic respiration

Answer 3

Glycolysis

Question 4

Describe lactate fermentation

Answer 4

Pyruvate (produced in glycolysis) is REDUCED to form lactate.
The lactate can then either by oxidised back into pyruvate for use in aerobic respiration (requires oxygen) or can be stored in the liver as glycogen.

Question 5

Where does ethanol fermentation take place?

Answer 5

Yeast and plants

Question 6

Where does lactate fermentation take place?

Answer 6

Animals