B3: COMMUNICABLE DISEASES

Question 1

What are the 4 types of pathogen?

Answer 1

-bacteria
-viruses
-protists
-fungi

Question 2

How can bacteria make you feel ill?

Answer 2

-small cells (~1/100th the size of body cells) which can reproduce rapidly inside your body
-produce toxins that damage cells and tissues

Question 3

How can viruses make you feel ill?

Answer 3

-produce rapidly inside your body
-live inside your cells and replicate themselves within the cell
-the cell usually then bursts which makes you feel ill

Question 4

How can fungi make you feel ill?

Answer 4

-can grow and penetrate human skin and the surface of plants causing diseases
-can produce spores which can be spread to other organisms

Question 5

How can pathogens be spread?

Answer 5

-air
-water
-direct contact

Question 6

Measles:
-pathogen
-transmission
-symptoms
-prevention
-treatment

Answer 6

PATHOGEN
-virus
TRANSMISSION
-air particles
-sneezing/coughing etc.
SYMPTOMS
-flu-like
-rash/fever
-vomiting
-could be fatal
PREVENTION
-vaccines
TREATMENT
-antiviral creams

Question 7

HIV:
-pathogen
-transmission
-symptoms
-prevention
-treatment

Answer 7

PATHOGEN
-virus
TRANSMISSION
-bodily fluids
SYMPTOMS
-initially flu-like
PREVENTION
-sanitise equipment
-prevent contamination
TREATMENT
-antiviral medicines

Question 8

Tobacco mosaic virus (TMV):
-pathogen
-transmission
-symptoms

Answer 8

PATHOGEN
-virus
TRANSMISSION
-water and roots
SYMPTOMS
-spotted leaves
-yellow leaves
-less chloroplasts
-less photosynthesis
-less glucose

Question 9

Salmonella:
-pathogen
-transmission
-symptoms
-prevention
-treatment

Answer 9

PATHOGEN
-bacteria
TRANSMISSION
-undercooked food
-contamination
SYMPTOMS
-stomach pains
-fatigue
-diarrhoea
-fever
-vomiting
PREVENTION
-vaccinating poultry
TREATMENT
-antibiotics

Question 10

Gonorrhoea:
-pathogen
-transmission
-symptoms
-prevention
-treatment

Answer 10

PATHOGEN
-bacteria
TRANSMISSION
-sexually transmitted
SYMPTOMS
-pain when urinating
-thick discharge
PREVENTION
-barrier contraception
TREATMENT
-penicillin
-antibiotics

Question 11

Rose black spot:
-pathogen
-transmission
-symptoms
-prevention
-treatment

Answer 11

PATHOGEN
-fungus
TRANSMISSION
-water and roots
SYMPTOMS
-spots
-less photosynthesis
PREVENTION + TREATMENT
-fungicides
-moving plant

Question 12

Malaria:
-pathogen
-transmission
-symptoms
-prevention
-treatment

Answer 12

PATHOGEN
-protist
TRANSMISSION
-mosquitos
SYMPTOMS
-fever
-vomiting
-can be fatal
PREVENTION:
-mosquito nets
-mosquito spray
-stopping mosquitos from breeding
TREATMENT
-tablets
-vaccine