1.2.5 Pathogens

Question 1

What is a Pathogen?

Answer 1

A pathogen is any microorganism that causes disease in another organism (e.g. in plants or animals

Question 2

List 4 Pathogens?

Answer 2

Bacteria
Fungi
Protoctists
Viruses

Question 3

Pathogenic bacteria do not always infect the hosts of cells, where can they remain.

Answer 3

They can remain within body cavities or spaces

Question 4

M. tuberculosis causes what type of Infectious disease

Answer 4

tuberculosis

Question 5

N. meningitidis causes what?

Answer 5

bacterial meningitis

Question 6

Is Fungi more common in Animals or Plants.

Answer 6

Plants

Question 7

Name 2 fungal diseases that exist on the surface of the skin

Answer 7

Cattle ringworm and athletes foot

Question 8

Black Sigatoka is a fungal disease in what?

Answer 8

Bananas

Question 9

Name a protist that causes severe forms of malaria in humans

Answer 9

Plasmodium falciparum

Question 10

P. infestans causes the what?

Answer 10

infamous potato blight

Question 11

are Viruses usually included in the classification of living organisms

Answer 11

No, they are not, this is because they don’t carry out the 8 processes of life.

Question 12

Name some of the biological characteristics of Viruses

Answer 12

1. They are small particles (always smaller than bacteria)

Question 13

Give 3 examples of viruses

Answer 13

The tobacco mosaic virus (TMV) causes discolouring of the leaves on tobacco plants by preventing the formation of chloroplasts

The HIV virus causes AIDS

The influenza virus causes the ‘flu’

Question 14

What was the first virus to be isolated by scientists

Answer 14

tobacco mosaic virus

Question 15

How many species of plants does the tobacco mosaic virus infect.

Answer 15

150 species of plants including tomato plants and cucumbers

Question 16

What does HIV stand for

Answer 16

Human Immunodeficiency Virus

Question 17

What does HIV lead to

Answer 17

AIDS

Question 18

How many different influenza viruses infect humans to cause the flu

Answer 18

3

Question 19

Name the 3 different influenza viruses that infect the cells that line the airways

Answer 19

Influenza A, influenza B and influenza C

Question 20

What do Influenza A, influenza B and influenza C cause?

Answer 20

A high temperature, body aches and fatigue

Question 21

Which Influenza virus causes the most cases of flu globally

Answer 21

Influenza A

Question 22

What does the Influenza virus cause (symptoms’)

Answer 22

They cause a high temperature, body aches and fatigue