Microbiology

Question 1

What are the stages of bacterial growth?

Answer 1

Lag phase

Log Phase

Stationary period

Decline phase

Question 2

How can bacteria pass on their genetic information?

Answer 2

Conjugation

Transduction

Transformation

Question 3

How do bacteria cause illness?

Answer 3

endotoxins

Aggressins
- steptokinase

Unwanted immune reactions

• DIC
• Immune cross reaction

Exotoxins
- Diptheria toxin

Question 4

What bacteria causes whooping cough?

Answer 4

Bordatella Pertusis

Question 5

What ribosomes are present in the bacteria?

Answer 5

50S
30S

make up to 70S

Question 6

What are modes of spread of a disease?

Answer 6

Endogenous - flora bacteria

Faeco - oral
- contaminated water or food

Airborne Spread

Vector borne
- via insects

Direct inoculation
- pathogen enters directly to site - tetanus in a wound

Direct person to person

Question 7

What are the two proteins found on some viruses to aid with attachment and entry?

Answer 7

Haemagluttinin

Neuramanidase

Question 8

Name two DNA viruses

Answer 8

Poxviruses and Herpesviruses

Question 9

Name two RNA viruses

Answer 9

Rubella Virus and Retroviruses - HIV