Aerobic + Anaerobic respiration

Question 1

Def of aerobic respiration

Answer 1

Breaking down glucose with oxygen to release energy and producing carbon dioxide and water

Question 2

Word equation for aerobic respiration

Answer 2

glucose + oxygen —> carbon dioxide + water (+ energy)

Question 3

State where respiration occurs in a cell

Answer 3

mitochondria

Question 4

Describe where and how respiration takes place

Answer 4

In mitochondria which are found in cells. Releases carbon dioxide and water with energy

Question 5

How does glucose get into cells

Answer 5

• It is a carbohydrate found in food
• Digestion breaks down food into small molecules releasing glucose molecules
• Absorbed by wall of small intestine into bloodstream
• Around body in blood then dissolves in plasma
  -Dissolved glucose diffuses into cells for respiration

Question 7

Explain in detail how the reactants of respiration get into cells and what happens to the products in respiration (6 marks)

Answer 7

• Inhaling fills alveoli in your lungs with oxygen
  -Oxygen then diffuses into your bloodstream
• Oxygen is carried to the cells from the red blood cells
• Glucose comes in your body from your food
• Where it is digested and absorbed by the wall of the small intestine
• Dissolving into the plasma
• Respiration occurs in mitochondria
• Release carbon dioxide and water
• Exhale carbon dioxide
• Carbon dioxide produced in respiration diffuses into bloodstream

Question 8

Anaerobic def

Answer 8

Releasing energy from the breakdown of glucose without oxygen producing lactic acid

Question 9

Describe two differences between aerobic respiration and anerobic respiration

Answer 9

1. Anaerobic respiration doesnt use oxygen
2. Anaerobic respiration produces lactic acid which can cause muscle cramps

Question 10

State and explain one situation where a mouse would use anaerobic respiration

Answer 10

• Running away from predator
• Anaerobic respiration because it needs oxygen in its muscles quickly and it occurs when do strenuous activity of sprint
• Extra energy required for a short period

Question 11

Why cant mouse repsire anaerobically for long period

Answer 11

Build up of lactic acid

Question 12

When does anaerobic respiration occur

Answer 12

Used up all oxygen in body

Question 13

What does the recovery time mean

Answer 13

Length of time to pay back oxygen

Question 14

What does oxygen do to the lactic acid

Answer 14

Break it down

Question 15

What does the cell have to do when in oxygen debt

Answer 15

Create energy from glucose

Question 16

Which produces less energy anaerobic or aerobic

Answer 16

Anaerobic - half

Question 17

Word equation for anaerobic

Answer 17

glucose —> lactic acid (+ energy)