Respiration

Question 1

Give 3 ways organisms use their energy

Answer 1

1) Build larger molecules from smaller ones
2) Muscular contraction
3) Maintaining body temperature

Question 2

What is cellular respiration?

Answer 2

An exothermic reaction that transfers energy from glucose

Question 3

What’s the word equation for aerobic respiration?

Answer 3

Glucose + Oxygen ——> Carbon dioxide + water

Question 4

What’s the symbol equation for aerobic respiration?

Answer 4

C6H12O6 + 6O2 ——> 6CO2 + 6H2O

Question 5

Give two reasons why the body doesn’t like anaerobic respiration

Answer 5

1) Only PARTIALLY breaks down glucose, so doesn’t use all possible energy
2) Produces lactic acid which is toxic and painful to the body

Question 6

What’s the word equation for anaerobic respiration in humans?

Answer 6

Glucose ——> Lactic acid

Question 7

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

Answer 7

Glucose ——> Ethanol + Carbon Dioxide

Question 8

What is anaerobic respiration in yeast called?

Answer 8

Fermentation

Question 9

What are two things fermentation can be used for in industry?

Answer 9

1) Adding yeast to bread makes it look fluffy due to pockets of CO2
2) Alcohols

Question 10

What is oxygen debt?

Answer 10

Amount of oxygen needed to remove lactic acid from cells

Question 11

What is metabolism?

Answer 11

The sum of all the chemical reactions in a cell or body