Session 2-Intro To Microbes Flashcards

1
Q

What are prions?

A

Proteins that generate copies of themselves

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2
Q

True or false: viruses can live outside the host cell

A

FALSE

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3
Q

What is the common feature of mycoplasma, chlamydiae and rickettsiae?

A

All rely on host biochemistry for their reproduction

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4
Q

How do antiviral drugs work?

A

Block viral cell interaction so can block life cycle and cure infection

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5
Q

What does Adenovirus cause?

A

Respiratory tract infection

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6
Q

What can the human papilloma virus cause?

A

Cervical cancer

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7
Q

True or false: chicken pox can reactivate to cause shingles

A

TRUE

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8
Q

How is Hep B transmitted?

A

IV drug use (sharing needles)

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9
Q

What can Hep B cause?

A

Hepatocellular carcinoma

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10
Q

What are the classifications of DNA viruses? (3)

A

1) single-stranded, non-enveloped
2) double-stranded, non-enveloped
3) double-stranded, enveloped

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11
Q

Give an example of a single-stranded, non-enveloped DNA virus

A

Parvovirus 19

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12
Q

Give an example of a double-stranded, non-enveloped DNA virus

A

Adenovirus

Human papilloma virus

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13
Q

Give an example of double-stranded, enveloped DNA virus

A

Herpes

Hep B

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14
Q

How is coxsackievirus transmitted?

A

Ingestion of faeces

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15
Q

What symptoms does norovirus cause?

A

Vomiting and explosive diarrhoea

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16
Q

What can rubella cause in pregnant women?

A

Heart and brain damage in the baby

17
Q

What type of viruses are Ebola, Lassa and Marburg?

A

Haemorrhagic fever viruses

18
Q

True or false: bacteria have tissue trophisms

A

FALSE - virus, not bacteria

19
Q

What are bacteriophages?

A

Viruses that infect bacteria

20
Q

What shape are cocci bacteria?

A

Circular

21
Q

What shape are bacilli bacteria?

A

Rods

22
Q

What are the two arrangements of cocci?

A

Clusters

Chains

23
Q

What colour do gram positive bacteria stain?

A

Purple

24
Q

What colour do gram negative bacteria stain?

A

Red

25
Q

What are spores?

A

Bacteria surrounded by a hard shell, can survive very high temperature and pressure

26
Q

Why is it hard to produce anti-fungal treatment?

A

Hard to damage fungi without damaging own body cells because both eukaryotes

27
Q

Give an example of yeasts

A

Candida albicans

28
Q

Give examples of moulds

A

Aspergillus species

Dermatophytes (ringworm, athlete’s foot)

29
Q

Give examples of Protozoa

A

Giardia lamblia

Plasmodium falciparum

30
Q

Give examples of helminths

A

Roundworms
Tapeworms
Flukes