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Microbiology
Chapter 9, Exam 2
27
Biology
Undergraduate 1
05/22/2008

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Cards

Term

Physical methods of microbial control aim to Sterilize

 

which means:

Definition

to destroy or remove all forms of life

 

Term
Two types of heat method: m.. and d..
Definition
moist, dry
Term

pasteurization: LTH- 62.9 degrees for 30 minutes

 

UHT: 142 degrees for 5 seconds

Definition

Low temp hold

 

ultra high temperature

Term
Coxiella burnetti is t..o.. for pasteurization, related to r..
Definition

test organism, rickettsiae

 

 

Term

121 degrees- a..

37 degrees- h...

5 degrees- f...

-10 degrees- f..

Definition

autoclave

humans

fridge

freezer

Term

UV is d...d..

at high livels= s...

moderate= d...

minimal= m...

Definition

dose dependent

sterlization

disinfectant

mutation

 

Term

denaturation: microbial proteins change from 3-d to 2-d, enzymes i..

 

radiation disrupts the n..a.. components of c..

Definition

inoperative

 

nucelic acid, cytoplasm

 

Term

X-rays and gamma rays induce e.. and p.. to jump out of m..

 

aka io... raditation

plastics, spices, preserved meats

Definition

electrons and protons molecules

 

ionization

Term

Drying, aka d..

 

water is r.. for most c..r.. in microbes

 

f... d... also known as lyophilization

Definition

desiccation

required, chemical reactions

 

Term

water can be removed from microbial environment through o..

 

flow of water occurs because

Definition

osmosis

 

concentration of water is higher inside the cell than outside

Term

filtration

 

need .-- to .-- micrometer pores to trap most b..

Definition

.2 to .5, bacteria (millipores)

 

 

Term
Low temperatures can be used to control microbes but not to s...
Definition
sterlize
Term

Lister: used p.. to sterilize

 

chemical methods are used to lower microbial populations and kill most p..

Definition

phenol

 

pathogens

Term

ethyl alcohol has no effect on s.

 

Aldehydes are Formaldehyde and glutaraldehyde

are T.

Definition

spores

 

Aldehydes: toxic

 

 

 

Term

halogens are extremely reactive elements because of the configuration of electrions

 

betadine

chlorine

Definition

an antiseptic given before shots

 

drinking water and swimming pools

Term

Heavy Metals

 

S.. in form of s.. nitrate

 

M.. to treat skin wounds

 

C.. in form of C..S.. (bordeaux mixture)

Definition

silver, silver nitrate

mercury

copper, copper sulfate

 

Term
Detergents: strong wetting agent and tension reducer, l... the m..
Definition
lift the microbe
Term

etylene oxide, used for p...

!! E..

Definition

plastics

explosive

Term

Erlich and the m..b.. for s... called arsphenamine

 

D.. discovered p..

 

french isolated active substance in p.. called sulfanilamide

Definition

magic bullet, syphillis

 

Gomagk, prontosil

 

prontosil, during WWII

Term

Fleming discovered p..

useful for staph and other..

 

Florey and chain i.. p..

 

has beta-lactam n..

Definition

penicillin

Gram positive bacteria

 

isolated penicillin

 

nucleus

 

Term

penicillian derivate called a..

is beta lactam

Definition

amoxicillan

 

 

Term
the cephalosporin R... is an advanced c..
Definition

Rocephin. cephalosporin

 

 

Term

Aminoglycosides are useful against g..n..

 

example:

Definition

gram negative

 

gentamiacin

Term

broad spectrum antibiotics

 

kill many different microbes

ex: t... such as d...

Definition
tetracycline, doxycycline
Term

bacillus produced antibiotics such as b..

inhibits cell wall synthesis

g.. p.. b..

Definition

bacitracin

gram positive bacteria

Term
Antiviral chemical for Herpes simplex type I
Definition
Acylovir (zovirax)
Term
R factor: plasmid carried m..r..g..
Definition

multiple resistance genes

 

 

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