Microbiology stuff

Question 1

What is a eukaryotic species

Answer 1

A group of closely related organisms that breed amongst themselves

Question 2

What is a prokaryotic species

Answer 2

A population of cells with similar characteristics

Question 3

What are prokaryotic clones and strains

Answer 3

Clones are a population of cells derived from a single cell, a strain is genetically different cells within a clone

Question 4

What are viral species

Answer 4

Population of viruses with similar characterisitics that occupies a particular ecological niche

Question 5

What does pathogenicity mean

Answer 5

The ability of a microbe to cause disease (used to describe species)

Question 6

What does virulence mean

Answer 6

Degree of pathogenicity in a microorgansim

Question 7

How do organisms cause damage?

Answer 7

Invasion and damage of host cells, toxin production, or body’s response to infection

Question 8

Why do gram positive bacteria retain crystal violet

Answer 8

Thick layer of peptidoglycan

Question 9

What colour do gram negative bacteria stain

Answer 9

red

Question 10

How are bacteria classfied

Answer 10

Gram stain, phenotype, genotype, analytical methods like while cell lipids/proteins, cell wall

Question 11

Other than cultures, how can you test/identify bacteria

Answer 11

Looking for antigens (ELISA, immunofluorescence), looking for antibodies (ELISA, CFT), looking for genome (PCR)