2.2.6 Anaerobic Respiration

Question 1

What is anaerobic respiration?

Answer 1

When energy is released from glucose without oxygen

Question 2

When does anaerobic respiration often happen in humans?

Answer 2

During intense exercise when we cannot take in enough oxygen

Question 3

What is the word equation for anaerobic respiration in humans?

Answer 3

Glucose –> Lactic Acid + Energy

Question 4

What are the products of anaerobic respiration in humans?

Answer 4

Lactic Acid + Energy

Question 5

What is the reactant of anaerobic respiration in humans?

Answer 5

Glucose

Question 6

Why do you continue breathing after intense exercise?

Answer 6

The extra oxygen is needed to break down lactic acid

Question 7

What do we call the extra oxygen needed to break down lactic acid after intense exercise?

Answer 7

The oxygen debt

Question 8

Why does the body normally respire aerobically?

Answer 8

It releases more energy from glucose

It does not produce lactic acid which causes cramps

Question 9

What does lactic acid do to the muscles?

Answer 9

Causes cramps

Question 10

When might a plant respire anaerobically?

Answer 10

If its roots are waterlogged so cannot get oxygen.

Question 11

The special type of anaerobic respiration carried out by yeast is called…

Answer 11

fermentation

Question 12

What is yeast?

Answer 12

A microorganism (fungi)

Question 13

What is fermentation?

Answer 13

A type of anaerobic respiration done by yeast

Question 14

What is the equation for fermentation?

Answer 14

Glucose –> Ethanol + Carbon Dioxide + Energy

Question 15

What are the products of fermentation?

Answer 15

Ethanol + Carbon Dioxide + Energy

Question 16

What is yeast used for?

Answer 16

Making Beer
Making Wine
Making Bread

Question 17

How is yeast used to make bread?

Answer 17

Flour, water and yeast are mixed together.
Yeast ferments the sugar in the dough.
Ethanol and Carbon Dioxide gas are released
The gas is trapped in the dough and makes it rise