Microbial Infection (10) Flashcards
1
Q
How do viruses replicate?
A
by hijacking the host cell’s nuclear synthetic machinery and causing cytolysis
2
Q
How do bacteria replicate?
A
binary fission
3
Q
How are bacteria different from eukaryotes in terms of structure of the cell?
A
- no internal membranes
- haploid (single copy of a chromosome)
- no cytoskeleton
- cell wall
- flagellum for movement
4
Q
Recall an example of a virus and the disease it causes
A
HIV (retrovirus)
causes AIDS
5
Q
Recall an example of a bacterium and the disease it causes
A
Shigella, Neisseria meningitidis, Mycobacterium tuberculosis
6
Q
How do fungi replicate?
A
- asexually by fragmentation
- budding, or producing spores
- fragments of hyphae can grow new colonies
7
Q
Recall an example of fungi
A
Candida albicans
8
Q
How do protozoa replicate?
A
- in the host by binary fission
- or by formation of trophozoites inside a cell
- asexual
9
Q
Recall an example of protozoa
A
Plasmodium (causes Malaria) or Leishmaniasis
10
Q
How do helminths replicate?
A
life cycles outside the human host
11
Q
Give examples of Helminths
A
Roundworms (e.g. Ascaris), Flatworms, Tapeworms
