exam 1 form A

Question 1

developed small pox immunization

Answer 1

Edward Jenner

Question 2

sought a “magic bullet” to destroy pathogens and not host

Answer 2

Paul ehrlich

Question 3

discovered penicillin

Answer 3

alexander flemming

Question 4

pioneered aspetic surgery

Answer 4

joseph lister

Question 5

pioneered the cultivation of bacteria on solid media

Answer 5

Robert Koch

Question 6

Disproved the theory of spontaneous generation of microorganisms with swan-necked flasks

Answer 6

Louis Pasteur

Question 7

Disproved the theory of spontaneous generation of flies from meat, father of scientific method

Answer 7

Francesco Redi

Question 8

Fungi

Answer 8

all of the above, can be yeasts, eukaryotic, can be molds

Question 9

the person who proposed that all cellular life belongs to one of 3 domains based upon rRNA ssequences is:

Answer 9

carl woese

Question 10

which of the following organisms are responsible for red tides involved in shellfish poisoning?

Answer 10

Algae

Question 11

made of tubulin in eukaryotes

Answer 11

flagella

Question 12

means “sugar cup”; most often composed of polysaccharides:

Answer 12

glycocalyx

Question 13

the endosymbiotic theory explains its presence in the cell:

Answer 13

mitochondrion

Question 14

composed of RNA and protein; role in protein synthesis

Answer 14

ribosomes

Question 15

polysaccharide chains cross-linked by short peptides

Answer 15

peptidoglycan

Question 16

the main permeability barrier of the cell

Answer 16

cell membrane

Question 17

resting structure built for survival in harsh conditions

Answer 17

endosperm

Question 18

all of the following statements concerning prokaryotic flagella are true except:

Answer 18

they are composed of tubulin

Question 19

which of the following terms is NOT associated with bacterial cell walls?

Answer 19

Chitin

Question 20

mycolic acids, gram positive, negative, or acid fast?

Answer 20

acid fast bacteria

Question 21

Will appear blue after an acid-fast stain

Answer 21

a and b, gram positive and gram negative

Question 22

cells of the genus mycoplasma lack which of the following?

Answer 22

a cell wall

Question 23

an object measures .5 um. this is equivalent to

Answer 23

500 nm

Question 24

empty magnification results from increasing magnification without increasing the

Answer 24

resolution

Question 25

assume that a bacterial cell has established a proton gradient. when this gradient is used to power the transport of lactose into the cell, the process is most correctly termed:

Answer 25

symport

Question 26

which of the following microscopes is capable of generating a three dimensional image of a specimen?

Answer 26

all of above

Question 27

malachite green is associated with which of the following staining procedures?

Answer 27

endospore stain

Question 28

the molecule upon which an enzyme acts is known as its

Answer 28

substrate

Question 29

glucose goes in; pyruvate, ATP, and NADH come out

Answer 29

glycolysis

Question 30

hydrogen atom "juicing"; a proton gradient formed

Answer 30

electron transport

Question 31

lactic acid produced

Answer 31

fermentation

Question 32

fatty acids are broken down, 2 carbons at a time

Answer 32

beta oxidation

Question 33

consists of cytochromes and iron-sulfur proteins

Answer 33

electron transport

Question 34

ethyl alcohol is produced

Answer 34

fermentation

Question 35

the synthesis of acetyl coA from pyruvate is a bridge step between which 2 pathways?

Answer 35

glycolysis and krebs cycle

Question 36

Net ATP (aerobic bacterium) from substrate level phosphorylation only

Answer 36

4

Question 37

number of ethanol molecules produced during fermentation

Answer 37

2

Question 38

number of fatty acids in a phospholipid

Answer 38

2

Question 39

number of mitochondrial protons required to produce 1 ATP in the cytoplasm:

Answer 39

4

Question 40

number of ATP equivalents from one turn of the Krebs cycle

Answer 40

12

Question 41

proteins are polymers of

Answer 41

amino acids

Question 42

primary purpose of the Krebs cycle is to

Answer 42

remove H atoms from organic compounds and place them onto NAD and FAD

Question 43

catalase:

Answer 43

is one of fastest enzymes known

Question 44

NAD and FAD are most correctly classified as

Answer 44

Hydrogen atom carriers

Question 45

Most bacterial capsules are composed of

Answer 45

polysaccharide

Question 46

blood agar to which antibiotics inhibitory to gram-negative bacteria have been added is

Answer 46

all of the above

Question 47

a fatty acid containing 16 carbons is metabolized for energy by an aerobic bacterium. what is the total net number of ATP equivalents this fatty acid is worth?

Answer 47

129

Question 48

uncouplers of oxidative phosphorylation

Answer 48

all of the above

Question 49

which of the following ingredients is characterisitic of a complex medium?

Answer 49

beef extract

Question 50

how many times more acid is a tomato pH 4.3 than blood pH 7.3

Answer 50

1000 times

Question 51

capnophiles grow best in:

Answer 51

high concentrations of CO2

Question 52

40 organisms with a generation time of 20 min are allowed to multiply for 6 hours. how many organisms are present?

Answer 52

1.05*10^7

Question 53

one organism develops into 1.07*10^9 organisms in 6 hours. what is the generation time?

Answer 53

12 min.

Question 54

during the lag phase, organisms are:

Answer 54

synthesizing necessary enzymes

Question 55

for a mesophile, the optimum temp of an organism is:

Answer 55

always closer to its maximum than it's minimum

Question 56

halophiles require:

Answer 56

increased salt