b5

Question 1

define what is meant by good health

Answer 1

your physical and mental well-being, is in a good state.

Question 2

state 3 factors that can cause ill health

Answer 2

diet, stress, life situations.

Question 3

give an example of ill health each of these factors can produce diet, stress and life situations

Answer 3

diet- obesity, cancer, anaemia and diabetes
stress- heart disease, cancers and mental health problems
life situations- heart disease, cancer and malaria

Question 4

what effect does injecting drugs have on your chances of becoming infected with tuberculosis (TB)

Answer 4

it increases your chances by a lot

Question 5

what causes infectious disease

Answer 5

Infectious diseases are caused by pathogenic microorganisms, such as bacteria, viruses, parasites or fungi

Question 6

how do pathogens make you ill

Answer 6

Sometimes bacteria multiply so rapidly they crowd out host tissues and disrupt normal function.

Question 7

give 2 ways in which diseases are spread from one person to another

Answer 7

by air, by direct contact and through water

Question 8

describe the main differences between bacteria and viruses and how they cause disease

Answer 8

bacteria are free-living cells that can live inside or outside a body, while viruses are a non-living collection of molecules that need a host to survive

Question 9

give 3 examples of things people can do to reduce the spread of pathogens to lower the risk of disease

Answer 9

hand washing, using disinfectants, keeping raw meat from cooked meat, cough/sneeze into a tissue

Question 10

what are the main symptoms of measles

Answer 10

fever and red skin rash

Question 10

why is measles so rare in the uk now

Answer 10

there is an improved living condition and a vaccination program for young children

Question 11

describe the link between HIV and AIDS

Answer 11

AIDS is the late stage of HIV infection that occurs when the body’s immune system is badly damaged because of the virus

Question 12

why is untreated HIV usually fatal

Answer 12

if it is untreated it will turn into AIDS which is fatal

Question 13

what are the similarities between tobacco mosaic virus and measles

Answer 13

it effects the skin and the leaves

Question 13

one way that antibiotics can cure bacterial infections

Answer 13

A bactericidal antibiotic, such as penicillin, kills the bacteria

Question 14

describe how people become infected with food poisoning caused by salmonella

Answer 14

salmonella are a bacteria that live on raw meats and if they are consumed they disrupt the balance of the natural gut bacteria

Question 15

why do doctors in the uk rarely treat salmonella with antibiotics

Answer 15

because the symptoms don’t last many days

Question 16

gonorrhoea is an std explain what this means

Answer 16

it is a sexually transmitted disease.

Question 17

suggest ways of preventing gonorrhoea

Answer 17

using contraception

Question 18

describe 3 ways in which fungal diseases like black spot can be spread from plant to plant.

Answer 18

carried by the wind, rain drops, animals, contaminated soil

Question 19

describe how malaria is passed from one person to another.

Answer 19

by being bitten by an infective female Anopheles mosquito

Question 20

how can these actions prevent the spread of disease. washing hands before prepping food, throwing away used tissues

Answer 20

washing hands gets rid of all of the bacteria before you touch the food.
if used tissues are left around the bacteria on them can spread to the surrounding surfaces.

Question 21

explain why these symptoms of diseases increase risk of infection. blood not clot properly, white blood cell count falls.

Answer 21

clotting i what closes your wounds so they don’t get infected.
if your white blood cell count falls it means it will take longer to treat bacteria which gives more time for it to become infected.