Week 1 - Introduction To Microbes

Question 1

Are viruses and bacteria DNA, RNA or both?

Answer 1

Viruses can be either RNA or DNA

Bacteria are only DNA

Question 2

What is a plasmid?

Answer 2

DNA thats transferable between bacteria

Often contains antibiotic resistance genes

Question 3

Describe the shape of a cocci bacteria

Answer 3

Round

Question 4

Describe the shape of a spirillus bacteria

Answer 4

Long, thin, wiggly

Question 5

Describe the shape of a bacillus bacteria

Answer 5

Rectangle - rod shaped

Question 6

What is a cluster of cocci called?

Answer 6

Staphylococci

Question 7

What is a chain of cocci called?

Answer 7

Strephtococci

Question 8

What is the difference between the cell walls of gram postive and gam negative bacteria?

Answer 8

Gram positive - has peptidoglycan layer on the outside

Gram negative - has an outer membrane surrounding the peptidoglycan layer which is made from lipopolysaccharides and proteins

Question 9

What is the difference between an aerobe and an obligate aerobe?

Answer 9

Aerobe - can survive in the presence of oxygen

Obligate aerobe - requires oxygen to survive

Question 10

Whats the difference between an anaerobe and an obligate anaerobe?

Answer 10

Anaerobe - can survive in the absence of oxygen

Obligate anaerobe - requires an oxygen free environment to survive (unless has the ability to form spores)

Question 11

What is a single celled fungus called?

Answer 11

Yeast

Question 12

What is a multicellular fungus called?

Answer 12

Mould

Question 13

What is a single called parasite called?

Answer 13

Protozoa

Question 14

What is a multicellular parasite called?

Answer 14

Helminths (also includes worms)