Bacteria

Question 1

Bacteria shapes

Answer 1

Spiral
Rod eg TB
Round/ cocci eg pneumonia

Question 2

Suitable conditions for bacteria dividing

Answer 2

1. Temperature
2. Food and water resource
3. PH
4. Oxygen

Question 3

Conditions affecting growth of bacteria

Answer 3

Oxygen
( not all bacteria require oxygen but aerobic bacteria need oxygen for respiration)

Question 4

Antibiotic

Answer 4

Chemical produced by micro-organisms to kill other micro-organisms (bacteria and fungi)

Question 5

Saprophyte

Answer 5

Feed off dead organic matter

Question 6

Parasites

Answer 6

Feed off of a live host

Question 7

Economic importance of bacteria

Answer 7

• can be used to help make yoghurts and cheese
• can be used to make antibodies
• causes food to go off

Question 8

Pathogen

Answer 8

Disease causing organism

Question 9

Bioprocessing

Answer 9

The use of micro-organisms to form useful
1. Batch culture
2. Continuous flow

Question 10

Batch culture

Answer 10

• fixed amount of nutrients are added to micro- organisms in the bioreactor
• all phases occur
• bioreactor is emptied at end of production

Question 11

Continuous flow

Answer 11

• nutrients are added to micro-organisms in the bioreactor continuously
• stopped at stationary phase
• product is continuously removed

Question 12

Bioreactor

Answer 12

A container in which micro-organisms are used to produce a product

Question 13

Asepsis

Answer 13

Free of pathogens

Question 14

Sterility

Answer 14

Free of microorganisms