2.2.5 Aerobic Respiration

Question 1

What is aerobic respiration?

Answer 1

When an organism releases energy from glucose by reacting it with oxygen.

Question 2

Why do humans need energy?

Answer 2

To keep warm
To move
To grow
To keep the body functioning

Question 3

Where does the glucose that humans use in respiration come from?

Answer 3

Food (carbohydrates)

Question 4

What is the word equation for aerobic respiration?

Answer 4

Glucose + Oxygen –> Carbon Dioxide + Water + Energy

Question 5

How do our bodies get the oxygen needed for aerobic respiration?

Answer 5

We breathe in oxygen from the air

Question 6

What are the ‘waste products’ of aerobic respiration?

Answer 6

Carbon dioxide + water

Question 7

How are the waste products of aerobic respiration removed from the body?

Answer 7

Carbon dioxide + Water are breathed out

Question 8

What are the reactants of aerobic respiration?

Answer 8

Glucose + Oxygen

Question 9

What are the products of respiration?

Answer 9

Carbon Dioxide + Water + Energy

Question 10

Where does aerobic respiration happen?

Answer 10

Within the mitochondria of cells

Question 11

One single mitochondria is called a

Answer 11

mitochondrion

Question 12

Many mitochondrion are called

Answer 12

mitochondria

Question 13

Muscle cells carry out lots of aerobic respiration. Therefore they contain many…

Answer 13

mitochondria

Question 14

Why do muscle cells use a lot of energy?

Answer 14

Because they contract and expand (move)

Question 15

Glucose is a…

Answer 15

carbohydrate

Question 16

How does glucose get into cells.

Answer 16

1. Carbohydrate is eaten
2. Carbohydrate is broken down into glucose in the small intestine.
3. Glucose is absorbed into the blood plasma.
4. Glucose exits the blood and enters the body’s cells.

Question 17

What is blood plasma?

Answer 17

The straw-coloured liquid that red blood cells travel in.

Question 18

How does get into cells?

Answer 18

1. Oxygen is breathed into lungs.
2. Oxygen passes from lungs into the blood.
3. Oxygen is carried by red blood cells
4. When the red blood cell goes near a cell that needs oxygen the oxygen leaves the red blood cell and enters the new cell.

Question 19

Which substance makes red blood cells red?

Answer 19

Haemoglobin

Question 20

What is the function of haemoglobin in red blood cells?

Answer 20

Oxygen sticks to the haemoglobin which allows the red blood cell to carry oxygen around.

Question 21

How does carbon dioxide leave cells?

Answer 21

1. Carbon dioxide exits cell.
2. Carbon dioxide attaches to red blood cells.
3. Red blood cells transport carbon dioxide to the lungs where it is breathed out.