Microbiology- The Nature of Infection

Question 1

4 major groups of human pathogens

Answer 1

• Protozoa
• Fungi
• Bacteria
• Viruses

Question 2

Which group of human pathogen is a prokaryote?

Answer 2

Bacteria

protozoa and fungi are eukaryotes

Viruses are non-living

Question 3

Protozoa

Answer 3

single celled animals

Question 4

Fungi

Answer 4

higher, plant like organisms

Question 5

Bacteria

Answer 5

generally small and single celled

Question 6

Viruses

Answer 6

Small obligate parasites

Question 7

Between eukaryotes and prokaryotes, which are bigger?

Answer 7

eukaryotes

Question 8

Between eukaryotes and prokaryotes, which are complex (compartmental)?

Answer 8

eukaryotes

Question 9

Between eukaryotes and prokaryotes, which are usually single celled?

Answer 9

prokaryotes

Question 10

Between eukaryotes and prokaryotes, which have a no/ flexible cell wall

Answer 10

eukaryotes

Question 11

Between eukaryotes and prokaryotes, which are comprised of a single circular chromosome?

Answer 11

prokaryotes

Question 12

Which type of ribosomes are found in a eukaryotic cell?

Answer 12

80s ribosomes

Question 13

Which type of ribosomes are found in a prokaryotic cell?

Answer 13

70s ribosomes

Question 14

Gene structure of prokaryotic cells?

Answer 14

largely exons only

Question 15

Gene structure of eukaryotic cells?

Answer 15

introns and exons

Question 16

what is the cell wall made up of?

Answer 16

peptidoglycan

Question 17

which type of cell wall is a thick multi-layer PG?

Answer 17

Gram +ve

Question 18

which type of cell wall is a thinner PG layer, periplasm which makes up the outer membrane?

Answer 18

Gram -ve

Question 19

Structural role of lipopolysaccharide

Answer 19

Antigen

bacterial toxin

Question 20

Requirements for prokaryotic growth

Answer 20

Food, temperature, H+ conc, osmotic protection, oxygen

Question 21

Phases of bacterial growth

Answer 21

1. lag phase
2. exponential phase
3. stationary phase
4. decline phase