Microbial Infections

Question 1

Main types of infectious diseases

Answer 1

Bacteria
Viruses
Fungi
Protozoa
Helminths

Question 2

Viruses

Answer 2

Obligate parasites
Budding and cytolysis
HIV converts rna into dna via reverse transcriptase
Variola virus causes small pox

Question 3

Bacteria

Answer 3

Haploid
No internal membranes
Cell wall made of peptidoglycan
Poorly defined cytoskeleton
Divide via binary fission shigella causes bloody diarrhea
Meningitidis non blanching rash
Clostridium difficult gastro issues
Helicobacter pylori causes peptic ulcer
E. coli invades cells

Question 4

Why are prokaryotes more susceptible to mutation

Answer 4

If gene is mutated it’s will be expressed as there is only one copy

Question 5

Fungi

Answer 5

Membrane bound eukaryotes
Cause cutaneous mucosal or systemic mycoses
Budding
Eg Candida albicans

Question 6

Protozoa

Answer 6

Replicate via binary fission of formation of trophozites
Malaria:Infect blood and tissues and form trophozies. Fevers associated with parasite bursting outside of cells
Leishmaniasis:sand fly vector forms trophozites in cell

Question 7

Helminths

Answer 7

Metazoa with eukaryotic elks
Visible to human eye
Roundworms tapeworms flatworms
No vaccine but treatable