Respiration and photosynthesis

Question 1

Respiration definition

Answer 1

The release of energy from food

Question 2

Photosynthesis definition

Answer 2

The way plants make food by using light

Question 3

Difference compared to photosynthesis

Answer 3

In the process of respiration, oxygen and glucose yield water and carbon dioxide, while carbon dioxide and water yield glucose and oxygen during the process of photosynthesis.

Question 4

Chemical equation for respiration

Answer 4

C6H12O6 + 6O2 → 6CO2 + 6H2O (glucose + oxygen -> carbon dioxide + water)

Question 5

Chemical equation for photosynthesis

Answer 5

6CO2 + 6H2O — > C6H12O6 + 6O2(carbon dioxide + water → glucose + oxygen)

Question 6

Factors affecting the rate of respiration

Answer 6

Glucose availability
Oxygen availability
Temperature

Question 7

Factors affecting the rate of photosynthesis

Answer 7

Carbon dioxide levels
Temperature
Light

Question 8

Aerobic respiration

Answer 8

The release of energy from food using oxygen

Question 9

Anaerobic respiration

Answer 9

The release of energy from food in the absence of oxygen

Question 10

Anaerobic respiration in animal cells

Answer 10

animals, anaerobic respiration produces lactic acid as the glucose is not fully broken down. If the lactic acid builds up it can stop the muscles from working

Question 11

Anaerobic respiration in yeast cells

Answer 11

When yeast cells are reproducing rapidly during beer or wine production, the oxygen is used up. The yeast has to switch to using anaerobic respiration to ensure it can survive. Ethanol and carbon dioxide are produced.

Question 12

Importance of photosynthesis

Answer 12

Photosynthesis provides O2 for breathing and respiration.
Photosynthesis is a food source for plants and therefore animals.
Too much COz in the air contributes to global warming.