B5 - Communicable Diseases

Question 1

What is a communicable disease?

Answer 1

• Disease caused by pathogens,

- Can be passed from one person to another.

Question 2

What factors affect health?

Answer 2

• Diet
• Stress
• Life situations

Question 3

What is a pathogen?

Answer 3

-Microorganisms that cause diseases,viruses,bacteria,fungi and protists.

Question 4

Who can be affected by pathogens?

Answer 4

Plants and animals

Question 5

What is a bacteria?

Answer 5

-Single-celled living organisms

Question 6

What is a virus?

Answer 6

• Smaller than bacteria,
• They can only live in other cells,
• Therefore all viruses are pathogens.

Question 7

How does a bacteria cause disease?

Answer 7

-Rapidly divide with binary fission

Question 8

How do viruses cause disease?

Answer 8

-Live and reproduce inside cells damaging them and destroying them

Question 9

How do you prevent airborne diseases?

Answer 9

• Wear a mask
• Keep a safe distance
• Wash your hands regularly
• Isolate if you have it
• Get vaccinated

Question 10

How do you prevent waterborne diseases?

Answer 10

• Boil water before you drink it to make sure its clean
• Cut off bad water supply
• isolate if you have it

Question 11

How do you prevent direct contact diseases?

Answer 11

• Wash your hands
• Limit contact
• Isolate if you do have the diseases
• Get vaccinated

Question 12

What are some examples and symptoms of viruses in animals?

Answer 12

• Measles ( fever, red skin rash)

- HIV ( mild flu symptoms )

Question 13

What is one example and symptoms of viruses in plants?

Answer 13

-Tobacco Mosaic Virus ( discolouration, reduced growth )

Question 14

What are some examples and symptoms of fungi in plants?

Answer 14

• Black rose spot ( black spots on leaves )

- Panama disease ( dead bananas )

Question 15

What is one example and symptoms of fungi in animals?

Answer 15

-Athletes foot ( soreness in between toes )

Question 16

What is one protist and how is it spread?

Answer 16

-Malaria ( mosquito vector )

Question 17

What physical barriers does the body use against pathogens?

Answer 17

• Skin
• Hair
• Hydrochloric acid in stomach

Question 18

What are antibodies?

Answer 18

-Proteins produced by white blood cells to target certain pathogens

Question 19

What are antitoxins?

Answer 19

-Counteracts toxins to stop damage

Question 20

What does immunodeficiency mean?

Answer 20

-Inherited or acquired

Question 21

What is autoimmunity?

Answer 21

-Type 1 diabetes or arthritis

Question 22

What are allergies?

Answer 22

-A reaction of something with a hyperactive immune system

Question 23

What are some physical defences for plants?

Answer 23

• Cellulose well
• Bark on tree
• Thick waxy cuticle
• Losing leaves

Question 24

What are some mechanical defences for plants?

Answer 24

• Thorns
• Hairy stem
• Mimicry

Question 25

What are some chemical defences for plants?

Answer 25

- Antibacterial chemicals | - Poisons and toxins

Question 26

What are some examples of bacteria in animals and the symptoms?

Answer 26

- Salmonella ( fever, cramps, vomiting ) | - Gonorrhoea ( yellow discharge, pain )

Question 27

What is exponential growth?

Answer 27

-Every time the bacteria divide, the population doubles

Question 28

What pathogen does antibiotics kill?

Answer 28

-Bacteria

Question 29

What is a zone of inhibition?

Answer 29

-A place bacteria can't grow