2nd Quarter- MICROBIOLOGY Exam 2 Flashcards Preview

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Flashcards in 2nd Quarter- MICROBIOLOGY Exam 2 Deck (149)
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1

the lowest temperature at which an organism can live

minimum temperature

2

the highest temperature at which an organism can live.

maximum temperature

3

the temperature at which organism grows best.

optimum temperature

4

organisms that grow best at cold temperature. Usually below 20 degrees Celsius or less than 68 degrees Fahrenheit

Psychrophiles (cryophiles)

(CHRO- CRY- COLD)

5

most pathogens - bacteria that prefer medium temperature. Usually between 20 - 40 degrees C. The optimum of most pathogens is normal body temperature of 98.6 F or 37 C. When the body temperature goes up (fever) it does so to kill the organism.

Mesophiles

(MESO MEDIUM)

6

helps to kill most pathogens that like medium temperature.

fever

7

The optimum of most pathogens is normal body temperature of

98.6 F or 37 C.

8

organisms that grow best at warm temperatures. Usually above 40 degrees C

thermophiles

(THINK THERMAL UNDERWEAR TO WARM UP OR A THERMOS OF HOT COFFEE)

9

ultraviolet means

above violet

10

ultra violet light is bactericidal which means what?

will kill bacteria but will not kill all organisms because over a period of time organisms exposed to excessive amounts of ultra violet light will genetically mutate and develop resistance.

11

Ultraviolet light which ___________ be seen will ______ bacteria

cannot
kill

12

Deals primarily with solutions.
deals with something you cannot see without a microscope.

Osmotic Pressure
(Osmosis- diffusion through membranes)

13

the substance or solution dealing with osmotic pressure present in greater quantity

solvent

14

the substance or solution dealing with osmotic pressure present in lesser quantity

solute

15

name the different osmotic pressure

Isotonic solutions
Hypertonic solutions
Hypotonic solutions

16

is the type of Osmotic Pressure necessary to properly study bacterial cells and red blood cells to ensure no change in size, shape, and volume

the number of particles entering the cell roughly equals the number of particles leaving. The shape and integrity of the cell is maintained

Isotonic Solution

17

excess solute. If a bacteria is placed in this type of solution it changes the shape of the cell. There will be more particles leaving than entering. The end result – the cell will atrophy

hypertonic solution

18

to wrinkle or shrink

atrophy

19

the shrinkage of a bacterial cell when placed in a Hypertonic Solution

plasmolysis

20

the shrinkage of a red blood cell when placed in a Hypertonic Solution

crenation

21

beneath or below - less solute than normal. If a bacteria cell is placed in this solution, more particles will enter the cell than leave

hypotonic solution

22

The bursting of a bacterial cell when placed in Hypotonic Solution

plasmoptysis
(MOP) mop below the counter surface

23

The bursting of a red blood cell when placed in Hypotonic Solution

hemolysis

24

living organisms living together

symbiosis

25

relationship of two or more organisms that is of benefit to all involved

mutualism

26

relationship of two or more organisms that is of benefit to one w/ no effect to the other e.g. normal flora (living in on the human body)

commensalism

27

relationship between two or more organisms which is of benefit to one, harmful to the other.

parasitism

28

a relationship between two or more organisms which produces an effect, be it good or bad, not possible by each one alone. Both parties have to do their part.

synergism

29

a relationship between two or more organisms in which the presence of one inhibits or prevents the growth of the other; mutual opposition or contrary action.

antagonism

30

entry establishment & multiplication of pathogens within a host. Any disease caused by a microorganism

infection