Excelsior Practice Test A

Front 1

Mutualism

Back 1

Two organisms live together for mutual benefit

Front 2

Specimens sectioned into thin slices and coated with metal for

Back 2

Transmission electron microscopy

Front 3

Which descriptor indicates important difference between eukaryotes and prokaryotes?

Back 3

Cell wall size

Front 4

Campylobacter pylori

Back 4

Causes majority of foodborne infections in US

Front 5

Plasmids role in genetic engineering

Back 5

Used in cloning to ensure DNA will have sticky ends

Front 6

Agar-agar solidifying advantage

Back 6

It’s melting/solidifying temp range

Front 7

Amphibolism

Back 7

Process which bacteria generate energy and utilize it (catabolism and anabolism)

Front 8

Fermentation

Back 8

Produces lactate

Front 9

E. colicl

Back 9

Shortest doubling time in a complex culture medium such as glucose

Front 10

Clostridium genus (anaerobe) culture

Back 10

Thioglycollate (absorbs o2) is added to medium

Front 11

Studies of which subject have been most important in providing info about gene linkage and chromosome mapping

Back 11

Phage transduction

Front 12

Nonsense mutation

Back 12

Changes normal codon to stop codon (stops synthesis)

Front 13

Virus particles are quantitated one bacteriophage suspension

Back 13

By counting the number of plaques formed in agar

Front 14

A frame shift mutation would occur and the gene would no longer code for functional protein

Back 14

If organism were exposed to a chemical or physical agent that causes a base deletion of DNA

Front 15

Cell wall

Back 15

Allows bacteria to live in a hypnotic solution without bursting

Front 16

Process that involves reactions in the Plasma membrane of a prokaryotic cell

Back 16

Electron transport

Front 17

Inert endospores

Back 17

Protect against chemical disinfectants

Front 18

Bacteria move in a forward direction

Back 18

By rotation of polar flagella

Front 19

Aerotolerant anaerobe

Back 19

Doesn’t use o2 but can survive in its presence

Front 20

What is the 1st product of synthesis during replication of retrovirus

Back 20

ssDNA

Front 21

Peptidoglycan layer

Back 21

Common to gram positive and negative and acid fast microbes

Front 22

Pyruvic acid

Back 22

End product of glycolysis

Front 23

Gene therapy

Back 23

Insertion of a missing gene into defective human cell to combat disease

Front 24

Viro

Back 24

Cannot have 2 different nucleic acids

Front 25

Interferon

Back 25

Inhibits the replication of a virus

Front 26

Binary fission

Back 26

How bacteria reproduce

Front 27

Molecule containing anticodons

Back 27

tRNA

Front 28

Neissera gonorrhoeae penicillin resistant by

Back 28

Producing enzymes that degrade penicillin when it enters the cell

Front 29

Chemical growth control

Back 29

Kills bacteria on in animate objects

Front 30

AZT (azidothtmidine) anti-HIV drug

Back 30

Inhibits the synthesis of viral DNA by blocking reverse transcriptase activity

Front 31

Etheylene oxide

Back 31

Used for commercial sterilization of plastic apparatus

Front 32

Zephiran (quaternary amine compound)

Back 32

Kills microorganisms by surfactant ability to dissolve membranes

Front 33

Non ionizing UV light

Back 33

Effective against microorganisms

Front 34

Antibiotics disrupt normal functioning of ribosomes

Back 34

By inhibiting protein synthesis

Front 35

Gas chlorine

Back 35

Halogen used to disinfect water

Front 36

Chemotaxis

Back 36

Chemical attraction that phagocytes have for microorganisms

Front 37

O + has antibodies to A-

Back 37

Will cause hemolytic reaction

Front 38

Macrophages

Back 38

Present antigenic components in primary humoral and cell-mediated immune response

Front 39

Type of hypersensitivity in agammaglobulinemia

Back 39

Type IV cell-mediated

Front 40

Fungi characteristics

Back 40

Eukaryotes, multicellular, reproduce asexually or sexually, chemoheterotrophic

Front 41

Neutophils

Back 41

Predominate a local inflammatory response

Front 42

ELISA

Back 42

Uses HIV antigens to coat micro titer wells

Front 43

Strep pyogenes

Back 43

Can cause immune reaction on heat valves

Front 44

Antigenic shift of influenza A

Back 44

Caused by a segmented RNA genome

Front 45

Sulfate reducing bacteria

Back 45

Use sulfates as electron receptors

Front 46

Bacteroids

Back 46

Contain nitrogenase

Front 47

Azotobacter

Back 47

Nitrogen forming bacterium in free living soil

Front 48

Nitrogen fixation

Back 48

Conversion of nitrogen gas into ammonia

Front 49

Carbon dioxide

Back 49

End product of microbial metabolism in secondary fermentation