Microbial Nutrition & Information

Question 1

how do these microbes obtain nutrition? viruses, cyanobacteria (algae), fungi and bacteria, protozoa

Answer 1

obtain resources,
photosynthesis
saprophytic (external digestion)
ingets solid food particles

Question 2

if carbon source is organic, microorganism is..

Answer 2

heterotophic

Question 3

if carobn source is inorganic, microorganism is

Answer 3

autotrophic

Question 4

if energy source is chemical, microorganis is

Answer 4

chemotrophic

Question 5

if energy source is light, microorganism is

Answer 5

phototrophic

Question 6

chemoheterotrophs use complex organic materials as source of

Answer 6

carbon + energy

Question 7

4 examples of chemoheterotrophs

Answer 7

most bacteria
fungi
all higher animals
protozoa

Question 8

chemoautotrophs use … as carbon source and … as energy source

Answer 8

CO2

inorganic materials

Question 9

photoheterotrophs, carbon source and energy source

Answer 9

complex organic material

light

Question 10

photoautotrophs, carbon source, energy source

Answer 10

fixation of co2

light

Question 11

respiration: how many molecules of ATP per glucose
terminal electron acceptor in aerobic res
subtrate oxidised by

Answer 11

38
02
oxiding agents from environment

Question 12

fermentation: end products

how many ATP per glucose

Answer 12

acid or alcohol

2

Question 13

Gram stain differentiates bacteria based on presence of what

Answer 13

peptidoglycan in cell wall

Question 14

gram positive indicated

Answer 14

presence of peptidoglycan

Question 15

gram pos and gram neg colours

Answer 15

purple

pink

Question 16

5 steps of gram stain

Answer 16

fixation
crystal violet
iodine treatment
decolourisation
counter stain saffranin

Question 17

most bacteria produce the enzyme … which gives of bubbles of .. from h202

Answer 17

catalase

02

Question 18

oxidase test tests for …., pos result gives … colour

Answer 18

cytochrome c oxidase

blue

Question 19

oxidative fermentation test tests if gram … bacteria metabolise … by … or …

Answer 19

-ve
carbohydrates
oxidation
fermentation

Question 20

In O-F test, oxidative result is …. fermentation result is …

Answer 20

green colour

yellow colour