Micro Test 1-For Final Exam

Front 1

Spallanzani's conclusion about spontaneous generation was challeneged when?

Back 1

Lavosier showed oxygen was essential for life

Front 2

Pasteur is credited for all of the follow except?

Back 2

Specific microbes cause specific disease in hummans

Front 3

The ability of a microscop lens to distinguish between two points is based on it's what?

Back 3

Resolution

Front 4

Bacteria have a net _____ charge on their surface and are stained with _____ dyes

Back 4

Negative, basic

Front 5

Following the decoloring step in the gram stain, gram positive cells appear _____ and gram negative cells appear _____.

Back 5

Purple, colorless

Front 6

Which of the following pairs is mismatched?
a) capsule- simple stain plus negative stain
b) cell arrangement-simple stain
c) cell size- negative stain
d) gram stain-bacterial identification
e) none of the above

Back 6

E

Front 7

Neisseria gonorrhoeae is?

Back 7

Gram negative cocci

Front 8

Which of the following microscopes requires the specimen be placed in a vacuum?

Back 8

Transmission electron

Front 9

Special stain is used to?

Back 9

Color and isolate various structures such as flagella

Front 10

The movement of flagellum is best described as?

Back 10

propellar like

Front 11

Gram positive cells are more sensitive to antibiotics compared to gram negative cells because gram positive cells do not have what?

Back 11

Outermembranes

Front 12

There is no immunity to syphilis. This is because the bacteria?

Back 12

Has an outer sheath

Front 13

Individuals with cystic fibrosis would be most concerned about infection by bacteria with what?

Back 13

capsules

Front 14

Bacterial membranes can be damaged by what?

Back 14

alcohol, detergents, and polymixins

Front 15

All are true of endospores except
a) dormant structures
b) resistant to UV light, heat, and chemicals
c) function as energy reserve inclusions
d) germinate into vegetative cells

Back 15

C

Front 16

Which of the following is not a distinguishing characterisitic of procaryotic cells?

Back 16

They lack a plasma membrane

Front 17

Which of the following pairs is mismatched?
a) glycocalyx-adherence
b) pili-reproduction
c) cell wall-toxin
d) cell wall-protection
e) plasma membrane-transport

Back 17

B

Front 18

You have isolated a motile, gram-positive cell with no visible nucleus. You can assume this cells has what?

Back 18

Ribosomes

Front 19

Bacteria that would grow on refrigerated foods are most likely?

Back 19

Psychrotrophs

Front 20

You inoculated a brother tube and observed bacteria growth only in the bottom of the tube. The oxygen requirment of the bacterium is most likely?

Back 20

Obligate anaerobe

Front 21

The Term Fastidious refer to bacteria that require?

Back 21

organic growth factors

Front 22

A chemically defined medium would not contain?

Back 22

Beef extract

Front 23

Mannitol Salts Agar?

Back 23

Differentiates betwen pathogenic and non pathogenic Staphylococcus

Front 24

Nutritional studies are done using what type of medium?

Back 24

Chemicalled defined

Front 25

MacConkey agar is best used to grow samples from patient's with what?

Back 25

Diarrheae

Front 26

Blood agar is best used to grow samples from patient's with what?

Back 26

Sore throat?

Front 27

Reducing media is used to culture what?

Back 27

Clostridium tetani

Front 28

Bacterial populations peak at approximately _____ cells per ml.

Back 28

1 billion

Front 29

The object of pasteurization on milk is to what?

Back 29

kill all milk borne vegatative pathogens

Front 30

WHich of the following statements concerning chemicals used in disinfection is not true?

Back 30

all kill spores

Front 31

Which of the following infectious agents is most sensitive to chemical disinfection?

Back 31

Enveloped viruses

Front 32

Ethanol would not be effective against what?

Back 32

Poliovirus

Front 33

Which of the following chemical agents would be effective against both ensospores and mycobacteria?

Back 33

Glutaraldehyde

Front 34

True or flase, G+ bacteria are more susceptible than G- bacteria to chemical disinfection

Back 34

True

Front 35

The best method to serilize tissue culture flasks packaged in a plastic bag?

Back 35

Gamma rediation

Front 36

Avian influenze A?

Back 36

Bird Flue

Front 37

Staphylococcus aureus?

Back 37

Endemic in many hospitals since methicillin resistance

Front 38

West Nile Encephalitis?

Back 38

Transmitted between birds and to humans by mosquitoes

Front 39

Cretzfeldt-Jakob disease?

Back 39

Disease caused by prions

Front 40

Invasive Group A streptococcus?

Back 40

so called flesh eating bacteria

Front 41

Centrosomes?

Back 41

Organizing center for mitotic spindle

Front 42

Peroxisomes?

Back 42

Oxigation of amino acids and fatty acids

Front 43

Mitochondria?

Back 43

Enzymes for ceullar respiration

Front 44

Lysozyomes?

Back 44

Digest various molecules and bacteria

Front 45

Cell wall?

Back 45

protection from osmotic lysis

Front 46

Endospore?

Back 46

Resting

Front 47

Fimbriae?

Back 47

attachment to surfaces

Front 48

Flagella?

Back 48

Motility

Front 49

Glycocalyx?

Back 49

Protection from phagocytosis

Front 50

Name the catagory of bacteria that lacks a cell wall?

Back 50

Mycoplasm

Front 51

Antibiotic that prevents peptidoglycan synthgesis?

Back 51

Penicillin

Front 52

Name for the types of microorganisms that live in extreme conditions?

Back 52

Archea

Front 53

Acellular microorganism composed of a DNA or RNA core and protein coat?

Back 53

Virus

Front 54

Type of sterilization that ensures Clostridium botulinium spores are killed?

Back 54

Commericial Sterilization

Front 55

Gram negative cellular structure within which endotoxines are located?

Back 55

Outermembrane

Front 56

Space or area in procaryotic cell within which the DNA is found?

Back 56

Nucleoid

Front 57

Medium that differientiates between alpha and beta hemolytic Streptococci?

Back 57

Blood Agar

Front 58

Nutritional term means to use organic compounds as a source of carbon?

Back 58

Heterotrophic

Front 59

Term for absence of significant contamination?

Back 59

Aspesis

Front 60

Germ?

Back 60

Germs are referred to as a constantly dividing microorganism

Front 61

Biofilm?

Back 61

Biofilms is a structure that houses many species of cells in one organized community

Front 62

Procaryotic?

Back 62

A cell without a well defined Nucleus

Front 63

Disinfection?

Back 63

The removal of vegatative Pathogens

Front 64

Gram positive cocci, golden colored, in grape list clusters?

Back 64

Staphylococcus Aureus

Front 65

Gram negative rod, inhabits the large intestine?

Back 65

Escherichia coli

Front 66

Spirochetes, causes syphilis?

Back 66

Treponema Pallidum

Front 67

Attaches to mucous membranes in the genital urinary tract and surface of the eye?

Back 67

Neisesseria gonorrhea

Front 68

Define Antibiotic?

Back 68

Microbial Metabolic with Antimicrobial Acitivity

Front 69

Any one of three bacterial test organisms used to evaluate disinfectant

Back 69

Escercichia Coli

Front 70

Define disinfection. How does antisepsis differ from disinfection? Cite one example of a chemical that can be used as both a disinfectant and an antiseptic.

Back 70

See Test 1 Long answer

Front 71

Define the term virulence factor and explain why bacterial why bacteria capsules are considered virulence factors?

Back 71

Long Answers Test #1