Part 1 Testing

Question 1

Pathogens:

Question 2

bio topic 3 - page 1 of 1

Question 3

Communicable diseases and pathogeons

Question 4

• communicable diseases - spread by pathogens

Question 5

• pathogens - micro-organisms that cause infectious disease

Question 6

• pathogens include bacteria

Answer 6

virus

Question 7

Bacteria

Question 8

• some may cause food poisoning

Question 9

• bacteria make us ill by . 1 entering inside the human body

Question 10

• 2 bacteria reproduce rapidly

Answer 10

because of the body’s ideal conditions.

Question 11

they can reproduce every 20 mins

Question 12

•3 bacteria releases toxins

Answer 12

which damage tissue and makes us feel ill

Question 13

Virus

Question 14

• cannot reproduce by themselves

Answer 14

can only reproduce inside a host cell

Question 15

• viruses make us ill by. 1 virus invade the host cell

Question 16

•2 virus now reproduces inside the host cell

Answer 16

which is damaging to the

Question 17

cell

Answer 17

as when the virus leaves the cell it can cause the cell to burst open

Question 18

and die

Question 19

Spread of pathogens:

Question 20

• some pathogens are spread in the air e.g water droplets

Question 21

• some are spread directly in water

Question 22

• some are spread by direct contact between individuals

Question 23

Reducing the spread of pathogens

Question 24

• 1: )practicing basic hygiene - e.g washing hand before eating

Question 25

•2 ) : providing people with clean drinking water - [e.g chlorine in

Question 26

water!

Question 27

•3 ) reduce direct contact between individuals - e.g

Answer 27

condom during

Question 28

sexual intercourse

Question 29

• 4] however in some highly infectious diseases - patients may be

Question 30

isolated to prevent pathogen spreading to other people

Question 31

• 5 ) vaccinations can reduce the spread of pathogens