B5 Communicable Diseases

Question 1

Name 5 causes of bad health

Answer 1

Poor lifestyle choices
Stress
Genetics
Pathogens
Age

Question 2

What are pathogens

Answer 2

Disease causing microbes
Fungi
Virus
Protists
Bacteria

Question 3

What are communicable diseases

Answer 3

Can be passed on and is caused by a pathogen

Question 4

What are non communicable diseases

Answer 4

Cannot be passed on

Question 5

Name 2 bacterial diseases

Answer 5

Salmonella
Gonorrhoea

Question 6

Name 4 viruses

Answer 6

Measles
HIV
Tobacco mosaic virus

Question 7

Describe bacteria

Answer 7

They enter the body
Reproduce rapidly by binary fission
They produce toxins that make you ill
Can directly damage body cells

Question 8

Describe viruses

Answer 8

Only live in cells
They enter cells, take over its genetic machinery, reproduce rapidly and burst out of the cell, killing it

Question 9

Name a protist disease

Answer 9

Malaria

Question 10

Name a fungal disease

Answer 10

Rose black spot

Question 11

Describe measles

Answer 11

Spread by droplet infection
Causes a fever and rash
Can be fatal
No cure
Isolation and vaccines prevent spread

Question 12

Describe tobacco mosaic virus

Answer 12

Symptoms include mosaic pattern on leaves
Virus destroys plants cells so they can no longer photosynthesise
Spread by contact with other infected plant material

Question 13

Describe HIV

Answer 13

Causes flu like symptoms
Can be controlled with antiretroviral drugs
Attacks immune cells
Spread through bodily fluids
AIDs occurs when immune system in badly damaged

Question 14

Describe salmonella

Answer 14

Caused be bacteria found in food
Can cause fever, vomiting, diarrhoea, and abdominal cramps
The bacteria can be found in poultry so these animals are vaccinated against it

Question 15

Describe gonorrhoea

Answer 15

STD
Can be prevented by using a type of barrier contraception
Symptoms include green or yellow discharge or pain when urinating
Used to be treated with antibiotics but many resistant strains have developed

Question 16

Describe rose black spot

Answer 16

Fungal disease that affects plants
Causes black or purple spots on leaves
The whole leaf often turns yellow and drops off
Reduces photosynthesis
Spread in wind or water
Treatment includes removing infected leaves or using fungicides

Question 17

Describe malaria

Answer 17

The protist has a lifecycle that requires in to live inside a mosquito for some of its life then inside a mammal for the rest of it
In a mosquito, it is found in the salivary glands and is then transmitted to a person when it sucks their blood
Mosquito is a vector
Can cause recurring fever and possible death
Can be prevented by targeting mosquitos and avoiding getting bitten

Question 18

What are 4 ways to prevent infection/disease

Answer 18

Hygiene
Isolating
Destroying pathogens
Vaccination

Question 19

What is binary fission

Answer 19

How bacteria multiply

Question 20

What is a culture

Answer 20

A population of microorganisms that has been deliberately grown to study