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Flashcards in Microbiology Deck (84)
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1

A prokaryotic microorganisms that contains DNA only

Bacteria

2

Type of staining method to check presence of DNA

Positive feulgen reaction

3

Site of protein in synthesis in bacteria.

Polyribosome

4

Act as mitochondria in bacteria.

Mesosome

5

It is the site of oxidative phsophorylation

Cell membrane surface

6

Functions as an osmotic permeability barrier which is Aqueous and Hydrophilic

Cytoplasmic membrane

7

It is the stage when they are metabolically active but not reproducing.

Lag phase

8

Stage when there is cell division

Log or exponential phase

9

Log phase lasts for?

3-24 hours

10

Phase of which it is the target of most antibiotics

Log phase

11

Phase when they reached a steady state

Stationary phas

12

Bacteria's source of energy

Oxygen

13

What is a spore?

Part of cell wall to survive extreme heat

14

Bacteria needed for the quality of dry and moist heat

Spore-forming bacteria

15

Phase when bacteria dies due to nutrient depletion

Death phase

16

Bacterias are (heterotrophs, autotrophs)

Autotrophs

17

What are autotrophs?

Organisms that produces their own nutrient by oxidation of substances

18

After oxygen is used by bacteria, what is used next for their energy??

CO2 through fermentation

19

Uptake of DNA from outside of the cell wall

Transformation

20

Delivering bacterial DNA to the next hose to produce lysogen.

Transduction

21

Process by which plasmid is transferred from an F plus to F minus

Conjugation

22

What is a Plasmid?

Gene of bacteria where DNA is found

23

What is a lysogen?

One that receives DNA

24

The most distinguishing characteristics of bacterial genes include?

Self-duplication
Mutability

25

Bacteria that lives at 45-122 degree celsius

Thermophile

26

Bacteria that live at 25-45 degree celsius

Mesophile

27

Bacteria that live at 15-20 degree celsius

Psychrophile or cryophile

28

Classification of bacteria based on temperature

Thermophile
Mesophile
Psychrophile

29

Microbial growth may be estimated quantitatively by determining?

Cell nitrogen
Cell dry weight
Culture turbidity
Culture oxygen consumption

30

Microorganisms that carry out oxidative phosphorylation to obtain energy.

Obligate aerobes