1.2.5 Pathogens Flashcards
What is a Pathogen?
A pathogen is any microorganism that causes disease in another organism (e.g. in plants or animals
List 4 Pathogens?
Bacteria
Fungi
Protoctists
Viruses
Pathogenic bacteria do not always infect the hosts of cells, where can they remain.
They can remain within body cavities or spaces
M. tuberculosis causes what type of Infectious disease
tuberculosis
N. meningitidis causes what?
bacterial meningitis
Is Fungi more common in Animals or Plants.
Plants
Name 2 fungal diseases that exist on the surface of the skin
Cattle ringworm and athletes foot
Black Sigatoka is a fungal disease in what?
Bananas
Name a protist that causes severe forms of malaria in humans
Plasmodium falciparum
P. infestans causes the what?
infamous potato blight
are Viruses usually included in the classification of living organisms
No, they are not, this is because they don’t carry out the 8 processes of life.
Name some of the biological characteristics of Viruses
1. They are small particles (always smaller than bacteria)
Give 3 examples of viruses
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’
What was the first virus to be isolated by scientists
tobacco mosaic virus
How many species of plants does the tobacco mosaic virus infect.
150 species of plants including tomato plants and cucumbers
What does HIV stand for
Human Immunodeficiency Virus
What does HIV lead to
AIDS
How many different influenza viruses infect humans to cause the flu
3
Name the 3 different influenza viruses that infect the cells that line the airways
Influenza A, influenza B and influenza C
What do Influenza A, influenza B and influenza C cause?
A high temperature, body aches and fatigue
Which Influenza virus causes the most cases of flu globally
Influenza A
What does the Influenza virus cause (symptoms’)
They cause a high temperature, body aches and fatigue
