Bacteria Flashcards

Front 1

gentamicin is what type of antibiotic?
A. Cephalasporin
B. Aminoglycoside
C. Tetracycline
D. Antimetabolite
E. Penicillin

Back 1

B
Gentamicin is an aminoglycoside

Front 2

What does a high anti-streptinolysin 0 titer indicate?

Back 2

A recent fever by group A streptococcus

Front 3

Bacterial Pnemonia is most often caused by what organism?

Back 3

Strep. Pneumoniae

Front 4

An anaerobic energy extracting mechanism called anaerobic respiration the final electron acceptor is:

Back 4

Inorganic oxidized compound like nitrates

Front 5

An organism which can survuve and grow either in the presence of or in the absence of oxygen is called what?

Back 5

Faculatative

Front 6

name a neurotoxin

Back 6

botulinum

Front 7

What is a toxoid made from?

Back 7

Exotoxins

Front 8

What condition is septic shock most often associated with?

Back 8

Gram (-) negative bacteria

Front 9

The extended use of a broad-spectrum antibiotic often leads to the development of a secondary infection by what?

Back 9

Normal flora yeast such as candida

Front 10

Most of the bacteria that produce bacterial pneumonias are noted for their production of:

Back 10

capsules

Front 11

What do gas gangrene, tetanus, and botulism all have in common?

Back 11

Each disease is produced by species of clostridium

Front 12

The gram reaction is based on what characteristic?

Back 12

Cell wall structure

Front 13

Group A streptococci (strep pyogenes) produce what type of hemolysis?

Back 13

Beta hemolysis

Front 14

Bacterial conjugation requires:

Back 14

Sex pilus and plasmid

Front 15

Conjugation between an F+ bacterial cell and an F-bacterium involves the transfer of what genetic elements?

Back 15

plasmid from F+ cell to F- cell

Front 16

What bacterial structure determines the shape and rigidity of the bacterial cell?

Back 16

Cell wall

Front 17

Blood agar is an example of what type of laboratory medium?

Back 17

Enriched medium

Front 18

To isolate a thermophilic organism what should you do?

Back 18

Expose culture to 80 degrees C for 10 minutes

Front 19

An organism has grown in a medium containing mannitol and under anaerobic conditions when you test the medium you find that the pH has fallen from 7.0 to 4.1, what is a valid conclusion?

Back 19

The organism has grown and has carried out anaerobic respiration using mannito as the final electron donor

Front 20

An organism that you isolated on an enriched laboratory medium containing sterois was shown to have all of the characteristics of a prokaryotic cell but lacks a cell wall. This organism is most likely to belong to what microbic group?

Back 20

Mycoplasma

Front 21

Finding large numbers of acid fast bacteria in a sputum sample would be consistent with a diagnosis of what disease?

Back 21

Tuberculosis

Front 22

Susceptibility to inactivation of a virus by ether is indicative of what?

Back 22

The virus has a lipid envelope

Front 23

What is the gram (-) negative reaction and cell structure of the genus Neisseria?

Back 23

Gram (-) diplococci

Front 24

What is most closely correlated to pathogenic, virulent strains of traphylococci?

Back 24

Coagulase production

Front 25

What is/are the structure(s) responsible for motility in bacteria?

Back 25

Flagella

Front 26

What are plasmids?

Back 26

Small, circular pieces of extrachromosomal DNA found in some bacterial cells

Front 27

Which of the following bacterial genera produces endospores and grows aerobically?

Back 27

Bacillus

Front 28

The electron transport system cytochromes are located where in a bacterial cell?

Back 28

Cell membrane

Front 29

Bacterial cells usually reproduce by what method when growing in culture?

Back 29

Binary fission

Front 30

A bacterial cell carrying a fertility factor (sex factor) plasmid free in the cytoplasm would be designated as:

Back 30

an f+ cell

Front 31

Bacterial cells usually reproduce by what method when growing in culture?

Back 31

binary fission

Front 32

What type of mutagenic agent produces thymine dimers in the DNA?

Back 32

UV radiation

Front 33

If you isolated Gram-negative diplococci from cerebrospinal fluid you could make a tenative diagnosis of infection by what genera?

Back 33

Neisseria

Front 34

What produces a gas gangrene type of myonecrotic lesion?

Back 34

Clostridium perfringens

Front 35

Treponema pallidum has what cell shape and causes what disease?

Back 35

Spirochete; syphilis

Front 36

Gram stain of a blood culture from a 40 year old male patient with suspected subacute bacterial endocarditis reaveals gram positive cocci in chains. When plated on blood agar the organism grew and showed alpha-type hemolysis and was not inhibited by an optichin disc. What is the most likely causative organism?

Back 36

Oral streptococci of the viradans group

Front 37

What is descriptive of the family enterobacteriaceae?

Back 37

gram negative found in the GI tract

Front 38

What are the bacterial disease causative agents for severe diarrhea

Back 38

Escherichia causes severe diarrhea

Front 39

What are the bacterial disease causative agents for toxic shock syndrome?

Back 39

Staphylococcus causes toxic shock syndrome

Front 40

What are the bacterial disease causative agents for gas gangrene?

Back 40

Clostridium causes gas gangrene

Front 41

What are the bacterial disease causative agents for cholera?

Back 41

Vibrio causes cholera

Front 42

What are the bacterial disease causative agents for menigococcemia?

Back 42

Neisseria causes menigococcemia

Front 43

What are the bacterial disease causative agents for diptheria?

Back 43

corynebacterium causes diptheria

Front 44

What are the bacterial disease causative agents for gonorrhea

Back 44

Neisseria causes gonorrhea

Front 45

What are the bacterial disease causative agents for syphilis?

Back 45

Treponema causes syphilis

Front 46

What are the bacterial disease causative agents for anthrax?

Back 46

Bacillus causes anthrax

Front 47

What kind of diagnostic test would you use to check for S. aureus infection

Back 47

Coagulase production

Front 48

What kind of diagnostic test would you use to check for streptococcal pneumonia?

Back 48

Optichin disc

Front 49

What kind of diagnostic test would you use to check for strep throat?

Back 49

Beta hemolysis on blood agar

Front 50

What kind of diagnostic test would you use to check for gonorrhea?

Back 50

Gram negative diplococci in exudase

Front 51

What kind of diagnostic test would you use to check for tuberculosis

Back 51

Acid fast organisms in sputnum

Front 52

A growing culture of bacteria in log phase was inoculated at 6 PM into growth medium. They endered the log phase at 7 PM, and divided every 30 minutes. If the culture reached a cell concentration of 10 to the 9th per ml at 12 midnight, at what time was growth one-half of the maximum?

Back 52

11:30

Front 53

Which of the following is caused by a protozoan?
a. diptheria
b. poliomyelitis
c. malaria
d. psittacosis
e. epidemic typhus

Back 53

C. malaria ?

Front 54

In general, when is a culture of bacteria most susceptible to a lethal agent?

Back 54

In the logarithmic phase of growth ?

Front 55

Energy-yielding reactions are referred to as anaerobic respiration if the final hydrogen acceptor is:

Back 55

inorganic compound other than atmospheric oxygen

Front 56

After growth of an organism a nutrient broth + lactose tube you detect the following compounds present in the broth lactic acid, succinic acid and CO2, what is an appropriate conclusion?

Back 56

The organism produces a lactase and derives its energy by a heterolactate fermentative pathway

Front 57

Temperate bacteriophage have what special characteristic?

Back 57

The ability to insert viral DNA sequences into the host cell genome