WorksheetsUnit 1 Exam Review
Total questions: 35
Worksheet time: 18mins
Swabbing the surfaces of your skin anywhere on your body and culturing that sample in the lab is likely to result in the growth of millions of bacterial cells on the culture plate, even if you practice good hygiene
True
False
The microorganisms that live in or on the human body are called the___
normal flora
recombinants
archaea
prokaryotes
Only two of the main types of microorganisms are found in or the normal healthy human body
true
false
Microorganisms have adapted to nearly every environment through the process of ___
evolution
bioremediation
recombinant DNA technology
ubiquity
In providing education about E.Coli, the RN the most appropiately uses which of the following terms, meaning disease-causing, to describe this organism?
pathogen
microbe
prokaryote
eukaryote
Which of the following is not an independent cellular organism, but rather a collection of contained genetic material that transmits information to a host cell?
virus
fungus
protozoan
bacterium
Which of the following are not considered microorganisms?
ticks
bacteria
fungi
none of these
Bacteria were traditionally considered prokaryotes. The defining feature of a prokaryotic cell is the absence of what cellular structure?
nucleus
choroplasts
ribosomes
mitochondria
This type of sample is seen under the microscope with the use of 1 drop of saline and a cover slip
wet mount
gram positive bacteria
gram negative bacteria
endospores
MaconKey agar is an example of what type of agar?
selective and differential
fastidious and nutritious
agar that only grows gram positive bacteria
agar that show hemolysis reaction of bacteria
What is the name of the first living organism on earth from 3.5 billion years ago
Last common ancestor
microbe common ancestor
great common ancestor
advanced common ancestor
Eukaryotes have larger ribosomes than prokaryotes
true
false
Which of these is a type of infection a patient gets while in healthcare facility?
Healthcare associated infection
opportunistic infection
community acquired infection
none of these
Which of these is an infection that occurs during a time when a patient has a supressed immune system?
community acquired
opportunistic
HAI
all of these
Mycoses is the term used for fungal infections
true
false
Which of these microbes is the hardest to kill
protozoan cysts
enveloped viruses
endospores
most gram negative bacteria
Which of these microbes is easiest to kill?
enveloped viruses
prions
endospores
most gram negative bacteria
Which of these is a method of physical control?
radiation
all of these
filtration
cold and dessication
Which of these is an example of chemical control of microbes?
bleach
boiling
pasteurization
autoclaving
Which of these physical methods for microbe control describe the use of small pores through which bacteria cannot pass through as a method of sterilization
autoclaving
boiling
filtration
radiation
Which of the following is present in both gram-pos and gram-neg bacterial cell walls
peptidoglycan
none of these
teichoic acid
lipopolysaccaharides
A bacterial genus that has waxy mycolic acid in the cell walls is
mycobacterium
salmonella
mycoplasma
streptococcus
Pilli are long rigid tubules that help transfer DNA
true
false
Plasmids are
found in all bacteria
the site of pathogenic genes
essential for growth and metabolism
none of these are correct
Chemotaxis is the ability to
move in response to light
transport desired molecules into cells
move in response to a chemical
A bacteria exhibiting chemotaxis probably has
a capsule
a flagella
fimbriae
thylakoids
bacterial endospores usually function in
storage
reproduction
survival
metabolism of nutrients
Which structure plays a direct role in the exchange of genetic material between bacterial cells
flagellum
capsule
fimbria
pilli
Which of these is true about biofilms?
they complicate treating some infections
they are only found in fungi
they are found only outdoors
they are only found in medical implants
The purpose of flagella is for
motility
reproduction
DNA transfer
Fimbriae are used to help bacteria cling to surfaces
true
false
Gram positive bacetria will stain what color in a gram stain
purple
pink
blue
green
all bacteria have plasmids
true
false
gram negative bacteria will stain what color with gram stain
purple
pink
green
blue
The gram negative cell walls produces
an endotoxin
exotoxin
peptidoglycan
plasmids
