Body Systems

Question 1

Respiration is…

Answer 1

the release of energy in a cell

Question 2

Whats the word equation for respiration…

Answer 2

Glucose + Oxygen –> Carbon dioxide + Energy + Water

Question 3

The air we inhale contains…

Answer 3

21% oxygen and 0.04% carbon dioxide

Question 4

The air we exhale contains…

Answer 4

16% oxygen and 4.04% carbon dioxide

Question 5

What chemical can we use to test for carbon dioxide in the air?

Answer 5

Limewater

Question 6

Why does exhaled air contains less oxygen than inhaled air

Answer 6

Some oxygen goes into different cells for respiration

Question 7

Parts of the breathing system are…

Answer 7

Larynx, Trachea, Bronchus, Bronchiole, Alveoli

Question 8

What is gas exchange

Answer 8

Oxygen diffuses from the alveoli into the red blood cells. Carbon dioxide diffuses from the blood to the alveoli.

Question 9

Describe the route taken by the blood

Answer 9

Blood low in oxygen enters the right side of the heart by veins to get pumped to the lung. It gets oxygenated and return to the left side of the heart by arteries to get pumped to the rest of the body

Question 10

Blood vessels are…

Answer 10

Arteries, Veins, Capillaries

Question 11

Veins are…

Answer 11

low in oxygen, high in carbon dioxide, they have a thin wall and go from the body to the heart

Question 12

Arteries are…

Answer 12

Rich in oxygen, low in carbon dioxide, have a thick wall and go from the heart to the rest of the body

Question 13

Capillaries are…

Answer 13

oxygenated and deoxygenated, have one cell thick wall and connect the arteries and the veins

Question 14

Red blood cells…

Answer 14

transfer oxygen from the lungs to the cells. Contain haemoglobin

Question 15

White blood cells…

Answer 15

Help us fight infections

Question 16

Platelets are…

Answer 16

small fragments that clot when we get injured to prevent blood loss

Question 17

Plasma is..

Answer 17

a yellow liquid that transfers nutrients, hormones that control our body and antibodies that help us fight diseases

Question 18

Carbohydrates…

Answer 18

Include starch and glucose, are the main fuel for supplying energy to cells. Can be found in Potatoes and bread

Question 19

Proteins…

Answer 19

Growth and repair of organism. Can be found in Meat and fish

Question 20

Lipids…

Answer 20

Long term storage of energy, Used for insulation, fat can protect organs from damage. They can be found in oil and butter

Question 21

Fibre…

Answer 21

Our bodies require fibre in small quantities. It helps with constipation and reduces risk of developing colon cancer. Its found in fruits and vegetables

Question 22

Vitamins…

Answer 22

needed in small amounts to keep us healthy

Question 23

Vitamin A

Answer 23

Good vision, dry eyes, carrots

Question 24

Vitamin C

Answer 24

Strong gums, bleeding gums, oranges

Question 25

Vitamin D

Answer 25

Strong bones, soft bones, egg yolk

Question 26

Minerals are...

Answer 26

not a source of energy but essential in small quantities

Question 27

Calcium...

Answer 27

Making teeth and bones strong

Question 28

Test for starch

Answer 28

Drop iodine solution to a food sample. The color should go from brown to blue black

Question 29

Test for glucose...

Answer 29

Add a drop of benedict to a food solution in a test tube and put it in a heated water . The color should change from blue to brick red

Question 30

What is the importance of starch...

Answer 30

Starch is broken down into glucose, which is used in cellular respiration

Question 31

What is the importance of glucose

Answer 31

Its used in cellular respiration for the release of energy

Question 32

Digestion is...

Answer 32

the process of breaking down large insoluble molecules into small soluble ones

Question 33

Enzymes are

Answer 33

chemicals use to break down proteins, carbohydrates into smaller nutrient molecules(such as starch into glucose) so they can be absorbed into the small intestine. As blood circulates it carries them to cells around the body

Question 34

Food that cant be broken down...

Answer 34

Are passed to the large intestine which absorbs their water. The remaining substances are removed through the anus in a process called egestion

Question 35

The route taken for digestion

Answer 35

Mouth, oesophagus , stomach , liver , small intestine , (if not broken down) to the large intestine, to the anus