organisms that cause disease Flashcards

1
Q

what is the definition of pathogen

A

A microorganism which causes disease

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2
Q

what are the 4 pathogens

A

virus
protoctista
Fungi
Bacteria

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3
Q

How does a virus invade a host

A

invade cell
take over genetic machinery
cause cell to create more copies of the virus cell
Host cell eventually bursts
releases viral cells which infect healthy cells

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4
Q

how does a bacteria cause damage

A

when in cell they release waste products which are toxic to the host and reproduce rapidly

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5
Q

what conditions are best for bacteria cells

A

Moist and warm conditions

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6
Q

how do fungi cause damage

A

fungus lives on skin
hyphae grow underneath skin
can also send out specialised reproductive hyphae- to grow to surface of skin and release spores

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7
Q

how do protoctista cause damage to a host

A

enter host cells and feed on contents whilst they grow

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8
Q

what pathogen causes malaria

A

Plasmodium

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9
Q

what is the vector for malaria

A

Female anopheles mosquito

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10
Q

What are the three viral infection

A

HIV/ AIDS
INFLUENZA
TMV TOBACCO MOSAIC VIRUS

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11
Q

What are the three bacterial diseases

A

tuberculosis
bacterial meningitis
ringrot

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12
Q

what are the three fungal infections

A

Black sigatoka
ringworm
athlete foot

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13
Q

what are the two diseases caused by protoctista

A

malaria
Blight

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