organisation

Question 1

3 main enzymes in the digestive system

Answer 1

carbohydrases,protease,lipases

Question 2

what’s an active site of an enzyme

Answer 2

where the enzymes bind the substrate

Question 3

function of bile

Answer 3

neutralises stomach acid and emulsifies fat

Question 4

describe the function of the pulmonary artery

Answer 4

carries deoxygenated blood away from the heart to the lungs

Question 5

describe the function of the pulmonary vein

Answer 5

carries oxygenated blood from lungs to the heart

Question 6

the role of the vena cava

Answer 6

carries deoxygenated blood from the rest of the body to the heart

Question 7

the role of the aorta

Answer 7

carries oxygenated blood from the heart to the rest of the body

Question 8

what are alveoli

Answer 8

where oxygen diffuses from the lungs into the blood and carbon dioxide diffuses from the blood to the lungs

Question 9

function of white blood cells

Answer 9

white blood cells destroy pathogens

Question 10

function of platelets

Answer 10

platelets are fragments of the cell that help blood clot

Question 11

Describe the role of the arteries

Answer 11

Arteries carry blood away from the heart. They have thick walls to withstand high pressure.

Question 12

Describe the role of the veins

Answer 12

Veins take blood back to the heart. They have thinner walls and valves to stop backflow of blood.

Question 13

Describe the role of the capillaries

Answer 13

Capillaries are small vessels where exchange happens, and are only one cell thick.

Question 14

How can a stent help treat coronary heart disease?

Answer 14

A stent can be inserted to keep the coronary artery open.

Question 15

What is the cause of coronary heart disease?

Answer 15

Coronary heart disease is caused by fat blocking the coronary arteries, reducing blood flow.

Question 16

How can statins help reduce coronary heart disease?

Answer 16

They can be used to reduce blood cholesterol.

Question 17

What are communicable diseases?

Answer 17

Diseases that can be spread between individuals.

Question 18

What are non-communicable diseases?

Answer 18

Diseases that cannot spread between individuals.

Question 19

What is cancer?

Answer 19

Cancer is caused by uncontrollable cell growth and division to form a tumour.

Question 20

What are benign tumours?

Answer 20

Benign tumours do not invade the rest of the body, and do not lead to cancer.

Question 21

What are malignant tumours?

Answer 21

Malignant tumours spread in the blood to form other tumours. They lead to cancer.