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WorksheetsENV111 (pt1)
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
A microorganism is a
a)
small organism that is capable of multiplying
b)
small organism that causes diseases only in plants
c)
small organism that causes diseases only in animals
d)
term that refers to a cell
2.
A pathogenic microorganism is a
a)
microorganism that multiplies
b)
microorganism that grows in a host
c)
microorganism that is small
d)
disease-causing microorganism
3.
A bacterium is called a prokaryotic organism because it is a
a)
one-cell organism that does not have a distinct nucleus
b)
one-cell organism that has a distinct nucleus
c)
multicell organism that does not have a distinct nucleus
d)
multicell organism that has a distinct nucleus
4.
Phagocytosis is the ability of a cell to
a)
reproduce
b)
move throughout a microorganism
c)
assimilate solids by use of pseudopods
d)
change shape
5.
___ magnification is used if you observe a microorganism with a microscope whose objective is 100X and whose ocular lens is 10X
a)
10X
b)
100X
c)
1000X
d)
10,000X
6.
The area seen through the ocular eyepiece is called the
a)
stage
b)
objective
c)
display
d)
field of view
7.
A smear is a
a)
preparation process in which a specimen is spread on a slide
b)
preparation process in which a specimen is dyed
c)
process in which a specimen is moved beneath a microscope
d)
process used to identify a specimen
8.
Which one of the following is FALSE regarding staining?
a)
Label a specimen
b)
Determine the shape of a specimen
c)
Colour a specimen
d)
Determine the density of a specimen
9.
A gram-positive cell wall has the crystal of violet dye.
a)
many layers of peptidoglycan, which repels
b)
many layers of peptidoglycan, which retains
c)
one layer of peptidoglycan, which retains
d)
one layer of peptidoglycan, which repels
10.
A cytoplasmic membrane is a membrane that provides
a)
a selective barrier between the nucleus and the cell's internal structures
b)
a barrier between the cell wall and the cell's external structures
c)
a barrier between cell's internal structures
d)
a selective barrier between the cell wall and the cell's internal structures
11.
The two types of endocytosis are
a)
facilitated diffusion and passive transport
b)
phagocytosis and pinocytosis
c)
hydrolysis and cytosol
d)
nucleoid and cytosol
12.
___ can use oxygen when it is present and continue to grow without it.
a)
Obligate aerobes
b)
Facultative anaerobes
c)
Obligate anaerobes
d)
Free radicals
13.
___ do not use oxygen and can be harmed by it.
a)
Obligate aerobes
b)
Facultative anaerobes
c)
Obligate anaerobes
d)
Free radicals
14.
___ is an agar.
a)
A nutrient
b)
Vitamins
c)
A solidifying agent
d)
Broth
15.
An enrichment culture is a
a)
hydroxyl radical medium
b)
medium containing no living microorganisms
c)
chemically defined medium
d)
moisture-filled medium
16.
An inoculating loop is a tool used to
a)
streak a microorganism in a pure culture
b)
place agar in a pure medium
c)
count colonies of microorganisms
d)
view colonies of microorganisms
17.
A sterile culture medium is a
a)
hydroxyl radical medium
b)
medium containing no living microorganisms
c)
chemically defined medium
d)
moisture-filled medium
18.
Helminths are
a)
fungi
b)
algae
c)
protozoa
d)
worms
19.
Some protists use cilia to move food into a mouth-like opening called
a)
pseudopods
b)
a cytosome
c)
a vacuole
d)
exocytosis
20.
A naked virus is a virus without
a)
an envelope
b)
a capsid
c)
RNA
d)
DNA
21.
A bacteriophage is a ___
a)
virus that can be killed by antibiotics
b)
virus that acts like a bacteria
c)
bacteria that acts like a virus
d)
naked virus that uses bacteria as a host cell
22.
A capsid is
a)
the protein coat that encapsulates a virus
b)
the membrane bilayer of a virus
c)
another name for a bacteriophage
d)
the envelope around a virus
23.
In the scientific name Legionella pneumophila, pneumophila is the
a)
genus
b)
species
c)
family
d)
order
24.
A simple stain
a)
increases the contrast between the cell and the background
b)
differentiates one bacterial group from another
c)
allows visualization of bacterial motility
d)
requires multiple staining steps
25.
Spherical shaped bacteria that divide and remain attached in chainlike patterns are called
a)
streptococci
b)
staphylococci
c)
spirochetes
d)
diplobacilli
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