B2

Question 1

What is “translocation”

Answer 1

translocation is the movement throughout (leaves) one part to other parts of the plant

Question 2

why are root hair cells adapted

Answer 2

hair root cells are adapted for efficient uptake of water by osmosis

Question 3

what does a phloem tissue do

Answer 3

phloem tissue dissolves sugar from the leaves to the rest of the plant for immediate use or storage

Question 4

What is meant by “transpiration”

Answer 4

Transpiration is the loss of water by evaporation

Question 5

what does a plant tissue include?

Answer 5

plant tissue includes

• epidermal tissue
• paliside mesophyll
• spongy mesophyll
• xylem
• phloem
• maristem

Question 6

what does phloem do?

Answer 6

Phloem transports dissolved sugars around the plant

Question 7

what does a xylem do?

Answer 7

the xylem transports water and mineral around the planet

Question 8

what does a spongy mesophyll do?

Answer 8

A spongy mesophyll is the gap needed for gases to pass through

Question 9

what does a palisade mesophyll do?

Answer 9

A palisade mesophyll is where most photosynthesis takes place

Question 10

what does epidermal tissues do?

Answer 10

An epidermal tissue protects the cells underneath

Question 11

what does HIV lead to?

Answer 11

HIV leads to weakened immune system

Question 12

what does the immune system react to and what can it lead to?

Answer 12

Immune system reacts to pathogens and can lead to allergies such as asthma

Question 13

Risk factors for most people that are linked to an increase of a disease

Answer 13

risk factors of a disease

• a person’s lifestyle
• substance in the person’s body/ environment

Question 14

Risk Factors for SOME people that might lead to an increase of disease

Answer 14

SOME risk factors for SOME people

• diet (smoking/ exercise)
• obesity ( lead to type 2 diabetes)
• alcohol (function of the brain and the liver)
• smoking ( lead to lung disease and lung cancer)
• smoking and drinking has an effect on unborn babies

Question 15

def of correlation

Answer 15

correlation is when there is a link between 2 things

Question 16

def of causation

Answer 16

causation is when there is scientific evidence when there is a link between 2 things.

Question 17

what is coronary heart disease?

Answer 17

when fatty materials build up inside the coronary arteries and reduces the flow of blood and lack of oxygen.

Question 18

what are stents

Answer 18

stents are inserted to open the arteries

Question 19

advantage and disadvantage of drugs (statins) for cardiovascular disease

Answer 19

Drugs ( statins)
ads- no surgery
dis- slows the rate of build up but doesn’t help build up if its already present

Question 20

advantage and disadvantage of stents for cardiovascular disease

Answer 20

stents
ads- only requires local anaesthetics
dis- some dangers with surgery, can cause a heart attack

Question 21

advantage and disadvantage of mechanical device ( artificial heart) for cardiovascular disease

Answer 21

mechanical device ( artificial heart)
ad- allows patients to survive while waiting for their donor heart 
dis- not a permanent solution

Question 22

advantage and disadvantage of heart transplant for cardiovascular disease

Answer 22

heart transplant
ad- can last for many years
dis- could reject the heard

Question 23

The- heart is an organ that pumps blood around the body in a ____________ system

Answer 23

double circulatory

Question 24

what does the right ventricle do?

Answer 24

The right ventricle pumps blood to the lungs where gas exchange takes place
( b- lungs)

Question 25

WHat does the Left ventricle do?

Answer 25

left ventricle pumps blood to the rest of the body

Question 26

what is the coronary artery

Answer 26

The coronary artery supplies blood to the muscles of the heart ( b- heart)

Question 27

what is the pulmonary artery and vein

Answer 27

the pulmonary artery and vein takes blood from the heart to the lungs b from h to lungs

Question 28

what does the aorta do? and the vena cava

Answer 28

The aorta delivers blood from the heart to the rest of te body the vena cava returns blood from the rest of the body to the heart

Question 29

what are the 3 blood vessels that the body contains?

Answer 29

the 3 blood vessels in the body are - arteries - veins - capillaries

Question 30

what does the arteries do?

Answer 30

The arteries carry blood away from the heart

Question 31

What does the veins do?

Answer 31

The veins contains valve which prevents the blood from flowing backwards

Question 32

What do the capillaries do?

Answer 32

The capillaries have thin walls so it allows blood to flow thru them

Question 33

What do blood contain?

Answer 33

blood is a tissue containing plasma

Question 34

what do red blood cells carry

Answer 34

red blood cells carry oxygen and they have no nucleus so they are able to maximise their space

Question 35

what are platelets?

Answer 35

platelets helps your blood to clot in a wound

Question 36

What is a plasma

Answer 36

Plasma is the liquid that carries everything in the blood

Question 37

what are enzymes made up of?

Answer 37

enzymes are made up of protein

Question 38

what are the aims of enzymes

Answer 38

Enzymes speed up the reactions without being used up

Question 39

``` Carbohydrase what are the molecules broken down? where are the enzymes produced? where the enzyme reacts ? what molecules are formed? ```

Answer 39

``` Carbohydrase: Carbohydrate is broken down (starch) they are produced in the pancreas enzymes reacts in the small intestines to produce carbohydrate reacts in the mouth/ small intestine the molecule that is formed is glucose ```

Question 40

what is the opening and the closing of a stomata?

Answer 40

opening and he closing of a stomata is a guard cell

Question 41

why does the temperature of the cause in increase in transpiration

Answer 41

If there is an increase in temperature it means there is more energy so its able to diffuse and evaporate out the stomata cause an increase in transpiration

Question 42

what is a group of organs working together called?

Answer 42

organs in a group working together is called the organ system

Question 43

what molecule is broken into amino acid?

Answer 43

proteins are broken into the amino acids

Question 44

what type of food molecule can be identified using the benedict's test?

Answer 44

sugars can be tested using the benedict's test

Question 45

what is iodine use to test

Answer 45

iodine is used to test starch

Question 46

what is the role of stomata and guard cells?

Answer 46

to role of stomata and guard cells is to control the gas exchange

Question 47

what are the products of lipids

Answer 47

products of lipids are glycerol and fatty acid

Question 48

what side of the heart pumps deoxygenated blood to the lungs

Answer 48

The right hand side pumps deoxygenated blood

Question 49

True or false: | communicable disease can spread between people or animals

Answer 49

True, communicable disease are contagious (non communicable disease are not)

Question 50

what is meant by carcinogen?

Answer 50

carcinogen is something that causes cancer

Question 51

name 2 organs that are affected my drinking alcohol

Answer 51

the liver an brain is affected by drinking

Question 52

What is a tumour?

Answer 52

Tumour is the uncontrollable growth of a cell

Question 53

What does the mouth do?

Answer 53

the food enters the mouth and mixes with saliva which contains enzyme and the teeth breaks down the food