Aerobic and Anaerobic Respiration

Question 1

What is aerobic respiration?

Answer 1

Respiration using oxygen

It’s the most efficient way to transfer energy from glucose.

Question 2

Where do most reactions in aerobic respiration occur?

Answer 2

Inside mitochondria

This is where energy transfer from glucose primarily takes place.

Question 3

What are the word equations for aerobic respiration?

Answer 3

Glucose + Oxygen → Carbon Dioxide + Water

The chemical representation is C6H12O6 + 6O2 → 6CO2 + 6H2O.

Question 4

What happens when there is not enough oxygen during vigorous exercise?

Answer 4

Anaerobic respiration occurs

Muscles start using anaerobic respiration in addition to aerobic respiration.

Question 5

What does ‘anaerobic’ mean?

Answer 5

Without oxygen

It refers to the incomplete breakdown of glucose.

Question 6

What is the word equation for anaerobic respiration in muscle cells?

Answer 6

Glucose → Lactic Acid

This process occurs when oxygen is insufficient.

Question 7

How does anaerobic respiration compare to aerobic respiration in terms of energy transfer?

Answer 7

Transfers less energy

This is because glucose isn’t fully oxidized.

Question 8

When is anaerobic respiration considered useful?

Answer 8

In emergencies, e.g., during exercise

It allows continued muscle use for a short time.

Question 9

How is anaerobic respiration in plants and yeast different from that in animals?

Answer 9

Produces ethanol and carbon dioxide instead of lactic acid

This occurs in the absence of oxygen.

Question 10

What is the word equation for anaerobic respiration in plants and yeast?

Answer 10

Glucose → Ethanol + Carbon Dioxide

This process is crucial for fermentation.

Question 11

What is fermentation in the context of yeast cells?

Answer 11

Anaerobic respiration in yeast

It is the process that produces alcohol and carbon dioxide.

Question 12

What is the significance of fermentation in the food and drinks industry?

Answer 12

Used to make bread and alcoholic drinks

Examples include beer and wine production.

Question 13

What role does carbon dioxide play in bread-making?

Answer 13

Makes bread rise

It is produced during fermentation by yeast.

Question 14

What is produced during the fermentation process in beer and wine making?

Answer 14

Alcohol

This is a direct result of anaerobic respiration in yeast.