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Question 1

It is practiced when it is necessary to exclude all microorganisms from a particular area.

Answer 1

STERILE (ASEPTIC) TECHNIQUE

Question 2

Removal of all microbial life
Accomplished by dry heat, autoclaving, gas, various chemicals (formaldehyde) and radiation.

Answer 2

STERILIZATION

Question 3

A sterilizing agent is called?

Answer 3

sterilant

Question 4

Removal of pathogens (not all organisms)
Destruction of vegetative pathogens (non endospore forming)

Answer 4

DISINFECTION

Question 5

Removal of pathogens from living tissue

Answer 5

ANTISEPSIS/ANTISEPTIC

Question 6

Removal of microbes from a limited area

Answer 6

DEGERMING

Question 7

Lower microbial counts to safe public health levels

Answer 7

SANITIZATION

Question 8

Germicidal agents

Answer 8

Bacteria

Question 9

Sporicidal agents

Answer 9

pores

Question 10

Fungicidal agents

Answer 10

fungi

Question 11

Algicidal agents

Answer 11

algae

Question 12

Virucidal agents

Answer 12

virus

Question 13

It is a process that combines dehydration & freezing

Answer 13

LYOPHILIZATION

Question 14

It is widely used in industry to preserve foods, antibiotics, antisera, microorganisms & other biologic materials

Answer 14

LYOPHILIZATION

Question 15

It does not kill microorganisms but prevent them from reproducing

Answer 15

LYOPHILIZATION

Question 16

From the greek word decay or putrid, indicates bacterial contamination, as in septic tanks for sewage treatment

Answer 16

SEPSIS

Question 17

Is the absence of significant pathogen.

Answer 17

ASEPSIS

Question 18

Important in surgery to minimize contamination from instruments, personnel and patient

Answer 18

ASEPTIC TECHNIQUE

Question 19

Lowest temp at which all cells in a culture are killed in 10 min

Answer 19

THERMAL DEATH POINT

Question 20

Time to kill all cells in a culture

Answer 20

Thermal death time

Question 21

Minutes to kill 90% of a population at a given temp

Answer 21

Decimal reduction time

Question 22

Denaturation of proteins

Answer 22

DRY HEAT

Question 23

burning materials into ashes

Answer 23

INCINERATION

Question 24

It kills microorganisms by coagulating the protein

Answer 24

MOIST HEAT

Question 25

used to sterilize surgical instruments, needles and syringes

Answer 25

BOILING

Question 26

Slows the growth of microorganisms

Answer 26

Refrigeration

Question 27

causes ice crystals to form within the cell and may rupture the cell membrane & cell walls of some bacteria

Answer 27

Slow freezing

Question 28

This is a method of making liquids or gases sterile by permitting them to "filter" or pass through appropriate material.

Answer 28

FILTRATION

Question 29

1. Applied to liquid suspensions 2. ALters of the molecular structures of proteins and CHO 3. Alterations result to the rapid inactivation of vegetative bacterial cells

Answer 29

HIGH PRESSURE

Question 30

resistant to high pressure

Answer 30

ENDOSPORES

Question 31

1. In the absence of water, microorganisms cannot grow or reproduce but can remain viable for years 2. When water becomes available, bacteria resume their growth and division

Answer 31

DESSICATION

Question 32

1. Used in the preservation of foods

Answer 32

OSMOTIC PRESSURE

Question 33

Direct sunlight has a powerful germicidal action

Answer 33

RADIATION

Question 34

For inanimate objects It may temporarily or permaanently inhibit the growth of pathogens

Answer 34

DISINFECTANTS

Question 35

IS USED IN TEACHING LABORATORIES TO EVALUATE THE EFFICACY OF A CHEMICAL AGENT

Answer 35

DISK DIFFUSION METHOD

Question 36

1. For animate preservation of skin tissue 2. Only reduces the number of organisms on the surface of the skin 3. It may also be applied at the site of surgical incision to destroy local microorganisms

Answer 36

ANTISEPTIC

Question 37

Are the chemical products of some organisms which have the ability of inhibiting the growth of other microorganisms

Answer 37

SELECTIVE

Question 38

EXAMPLE OF SELECTIVE

Answer 38

ANTIBIOTICS

Question 39

Microbial control on skin and mucous membranes

Answer 39

Chlorhexidine

Question 40

Disrupt plasma membranes

Answer 40

Biguanides

Question 41

three oxidizing agents

Answer 41

Halogens, Iodine, Chlorine

Question 42

is hypochlorous acid (HOCI) is the most effective form of chlorine because it is electrically neutral

Answer 42

Bleach

Question 43

is effective againts all kinds of bacteria, many endospores, various fungi, and some viruses-impairs protein synthesis and alters cell membranes; available as a tincture or an iodophor

Answer 43

IODINE

Question 44

Oxidizing agents

Answer 44

Peroxygens

Question 45

is often used to supplement chlorine in the disinfection of water because it helps neutralize tastes and odors

Answer 45

Ozone

Question 46

may slow wound healing; effectively disinfects objects such as packing materials and contact lens

Answer 46

Hydrogen peroxide

Question 47

works against anaerobic bacteria

Answer 47

Benzoyl peroxide