9.1 Aerobic respiration

Question 1

What happens during aerobic respiration

Answer 1

• Glucose reacts with oxygen, this reaction transfers energy that cells can use
• Carbon dioxide and water are produced as waste products of the reaction

Question 2

Why is aerobic respiration exothermic

Answer 2

Transfers energy to the environment, some is used for the reactions that take place inside a cell, rest it transferred to environment

Question 3

Aerobic respiration word equation

Answer 3

glucose + oxygen -> carbon dioxide + water

Question 4

Aerobic respiration symbol equation

Answer 4

C6H12O6 + 6O2 → 6CO2 + 6H2O + energy released

Question 5

If there are more muscle cells what does that mean

Answer 5

More mitochondria requiring fuel for respiration

Question 6

What does the cytoplasm do in respiration

Answer 6

Where enzymes are made, location of reactions in anaerobic respiration

Question 7

what does the nucleus do in respiration

Answer 7

Holds genetic code for enzymes involved in respiration

Question 8

What does mitochondria do in respiration

Answer 8

Contains the enzymes involved in respiration, where aerobic respiration happens

Question 9

What does the cell membrane do in respiration

Answer 9

Allows gases and water to pass freely into and out of the cell, controls passage of other molecules

Question 10

Whats an adaptation that mitochondria have for respiration

Answer 10

Folded inner membranes that provide a large surface area for the enzymes involved in aerobic respiration

Question 11

Why do living cells need energy from respiration

Answer 11

• Build up large molecules from smaller ones to make new cell material
• Break down larger molecules to smaller ones

Question 12

Why do animals need energy from respiration

Answer 12

Make muscles contract

Question 13

Why do mammals and birds need energy from respiration

Answer 13

• Maintain a constant internal body temperature
• On cold days energy transferred from respiration helps you to stay warm
• On hot days it is transferred to surroundings to keep your body cool

Question 14

Why do plants need energy from respiration

Answer 14

• Move mineral ions such as nitrates from the soil into root hair cells
• Convert sugars, nitrates and other nutrients into amino acids which are then built up into proteins

Question 15

What is hydrogen carbonate indicator

Answer 15

Measures carbon dioxide levels in aquatic systems
- Red is neutral
- Orange/yellow with increased carbon dioxide
- Purple when carbon dioxide is removed