microbiology

Question 1

what is bacterial cell divison

Answer 1

binary fission

Question 2

3 domains

Answer 2

bacteria, eukaryota, archae

Question 3

gram positive cell

Answer 3

simple wall with large amount of peptidoglycan

Question 4

to sterilise is to,

Answer 4

to destroy or remove life froms and inactivate viruses

Question 5

to disinfect is to,

Answer 5

reduce numbers to a safe level

Question 6

sequence of bacterial growth/death

Answer 6

lag, log, stationary, death

Question 7

Where do photoheterotrophs get their energy and C from?

Answer 7

light and organic carbon

Question 8

Where do chemoheterotrophs get their energy and C from?

Answer 8

organic compounds and organic carbon

Question 9

Where do chemoautotrophs get their energy and C from?

Answer 9

inorganic compounds and co2

Question 10

Where do photoautotrophs get their energy and C from?

Answer 10

light and co2

Question 11

mycorrhizal is a relationship between:

Answer 11

mycelia and roots

Question 12

what sequence follows attatchment of a virus

Answer 12

penetration, replication, release

Question 13

chemotrophs

Answer 13

energy from chemical compounds

Question 14

examples of measuring antimicrobial activities

Answer 14

agar diffusion method, minimum inhibitory concentration, broth dilution method

Question 15

heterotrophic

Answer 15

obtain food from external sources

Question 16

what kind of cell is protozoa

Answer 16

eukaryotic

Question 17

growth control terms

Answer 17

sterile, disinfect, bacteriostatic

Question 18

chemical controls

Answer 18

antiseptics, chemical sterillants, disinfectants

Question 19

factors affecting chemical controls

Answer 19

concentration of chemicals, presense of proteins,ph,temp

Question 20

types of growth media

Answer 20

nutrient enriched, selective, differential, solid, liquid, semi liquid

Question 21

what is growth media

Answer 21

substrate that can be used and regulated to grow microorganisms in lab

Question 22

growth of growth media depends on:

Answer 22

incubation conditions, suitiable micronutrients, macronutrients, trace elements

Question 23

what are endospores

Answer 23

structures that allow bacteria to survive

Question 24

what are endospores formed by

Answer 24

bacillus and clastridium

Question 25

where do algae grow

Answer 25

aquatic environments

Question 26

purposes of green algae

Answer 26

food source, fertiliser, bio fuel, component for carbon cycle

Question 27

purposes of single celled algae

Answer 27

polishes, paint, detergents, sound proofing

Question 28

role of algae in the environment

Answer 28

primary producers, stablise crust on exposed soils, can make toxins involved in food borne intoxication