Communicable diseases

Question 1

What are pathogens

Answer 1

Microorganisms that enter the body and cause disease

Question 2

Do pathogens cause communicable or non communicable diseases

Answer 2

communicable

Question 3

are bacterium cells

Answer 3

yes

Question 4

What size is a bacterium

Answer 4

1/100th the size of a normal body cell

Question 5

How do bacterium cause illness

Answer 5

By producing toxins (poisons) that damage that damage your cells and tissues.

Question 6

Are viruses cells

Answer 6

no

Question 7

How big are viruses

Answer 7

1/100th the size of a bacterium - 1/10,000 the size of a normal human cell

Question 8

What do viruses and bacteria do inside your body

Answer 8

They both reproduce rapidly inside the body

Question 9

how do viruses reproduce inside the body

Answer 9

They use the cells machinery to produce many copies of themselves filling up the cell. The cell will then burst releasing all the new viruses. The cell bursting is what makes you feel ill

Question 10

What are protists

Answer 10

Single celled Eukaryotes

Question 11

How many different types of protists are there

Answer 11

many

Question 12

Some protists are examples of parasites. What are parasites

Answer 12

Parasites live on or inside other organisms and can cause them damage. They are often transferred to the organism by a vector which doesn’t get the disease itself. e.g an insect that caries the protists.

Question 13

Can fungi be single celled

Answer 13

yes

Question 14

Some fungi can have a body which is made up of what

Answer 14

hyphae (a thread-like structure)

Question 15

In growing, hyphae can do what

Answer 15

penetrate things like human skin or the surface of plants

Question 16

What can hyphae prduce

Answer 16

spores which can be spread to other plants and animals

Question 17

How can pathogens be spread

Answer 17

• Water
• Air
• Direct contact

Question 18

How can a pathogen be transported by water

Answer 18

Some pathogens are picked up by drinking or bathing in dirty water. e.g chorea is a bacterial infection spread by drinking water contaminated with the diarrhoea of other suffers

Question 19

How can a pathogen be transported by air

Answer 19

Pathogens can be carried in the air and then be breathed in. Some airborne pathogens are carried in the air in droplets produced when you cough or sneeze - e.g. the influenza virus that causes flu is spread this way

Question 20

How can a pathogen be transported by direct contact

Answer 20

Some pathogens are picked up by touching contaminated surfaces such as the skin. E.g. athletes foot is a fungus which makes skin itch and flake off. It’s most commonly spread by touch the same tings as an infected person e.g. shower floors or towels