Cell Unit Study Guide
Page 1
1) When an individual goes without eating for a day, his or
5) The diagram below represents the letter h as seen in the
her blood sugar level remains about the same throughout the
low-power field of view of a compound light microscope.
day. This relatively constant condition is maintained by
a) homeostatic control
b) egestion
c) reproduction
d) growth of cells
Which diagram best represents the field of view if the slide is
2) The results of an experiment to determine the chemical
not moved and the objective is switched to high power?
composition of the cytoplasm of organism X are summarized
in the data table below.
What percentage of the cytoplasm is composed of organic
material?
a) 15
b) 20
c) 22
d) 92
3) Which cell structure is represented by the three
dimensional diagram below?
6) What is the lowest possible magnification that can be
obtained using the microscope shown below?
a) chloroplast
b) mitochondrion
c) plasma/cell membrane
d) replicated chromosome
4) The diagram below represents cells in a microscopic field
of view with a diameter of 1.5 millimeters
What is the approximate length of a single cell?
a) 0.5 um
b) 50 um
c) 500 um
d) 5,000 um
a) 20x
b) 200x
c) 4Ox
d) 800x
Cell Unit Study Guide
Page 2
7) Which invention most influenced the development of the
Which statement best explains why the thread is
cell theory?
not visible in diagram B?
a) ultracentrifuge
a) No stain was added to the slide
b) light microscope
preparation,
c) thermometer
b) The specimen was not centered in the
d) electron microscope
lowpower field.
c) The diaphragm was not adjusted for
8) Where are proteins made in plant cells?
more light.
a) nuclei
c) vacuoles
d) The thread is too large to be viewed
b) chromosomes d) ribosomes
with high power.
9) Which molecule will most likely diffuse through a cell
membrane?
a) starch
c) protein
b) water
d) DNA
10) The diagram below represents the change that occurred
after a fluid was added to a wet mount of some elodea leaf
cells.
12) The diameter of a microscope field of view is illustrated
below.
What is the approximate length of the cell in this field of
view?
a) 700 um
c) 1,500 um
b) 1,000 um
d) 2,000 um
13) In the diagram below, which substance belongs in area Z?
Which fluid was most likely added to the wet mount?
a) salt solution c) distilled water
b) tap water
d) iodine solution
11) A wet-mount slide preparation of a thread viewed in the
low-power field (10OX) of a compound light microscope is
shown in diagram A below. Diagram B shows the field of
view as it appeared when the objective was switched to high
power.
a) water
b) oxygen
c) nitrogen
d) carbon
14) Which cellular process is illustrated in the diagram
below?
a) exocytosis
b) hydrolysis
c) endocytosis
d) excretion
Cell Unit Study Guide
Page 3
15) A protist measures 500 micrometers in diameter. What is
18) A student records his body temperature at 6:00 a.m. and
the diameter of this organism in millimeters?
6:00 p.m. each day for 30 days. He notices a trend in his
a) 0.5
c) 50
temperature data and offers a possible explanation. His
b) 5.0
d) 500
explanation is known as
a) raw data
c) a theory
16) The diagram below represents four pieces of string, A
b) the hypothesis d) an observation
through D, placed below part of a centimeter ruler.
19) In an experiment, the setup that provides a basis of
comparison is known as
a) the conclusion c) a control
b) a variable
d) the problem
Which piece of string is 40 millimeters long?
a) A
c) C
b) B
d) D
17) The graph below represents the population growth curves
of two different species of aquatic organisms, A and B.
Which piece of string is 40 millimeters long?
a) A
c) C
b) B
d) D
17) The graph below represents the population growth curves
of two different species of aquatic organisms, A and B.
What is a valid prediction based on this graph?
a) Species A will not be present in the
water during the winter months.
b) Species A will eliminate species B
from the water after I year.
c) Species B will attain maximum
population size each autumn due to a
decrease in water temperature.
d) Species B will decrease in population
size approximately 1 month after a
decrease in the population size of
species A.
20) Which equipment should a student use to observe the
stained chromosomes in onion cells during mitosis?
a) ultracentrifuge
b) compound microscope
c) graduated cylinder
d) microdissection instruments
21) Organisms combine simple molecules to form complex
molecules by the process of
a) ingestion
c) regulation
b) synthesis
d) hydrolysis
22) A student performed an experiment and observed that
when two strains of microorganisms, strain A and strain B,
were grown at 25˚C, both survived. When the experiment
was repeated using increasing temperatures, more colonies of
strain A survived than those of strain B, until at 35˚C, only
strain A survived. Based on these results, the student inferred
that strain A was more resistant to higher temperatures than
strain B.
Which action must be taken before this inference can be
considered valid?
a) A different strain of bacteria must be
tested.
b) The experiment must be repeated and
similar results obtained.
c) The experiment must be repeated
using different variables.
d) A new hypothesis must be developed
and tested.
Cell Unit Study Guide
Page 4
23) The arrows in the diagrams below represent the direction
26) Diagrams A and B below represent two different slide
of movement of a certain type of molecule through the cell
preparations of elodea leaves. The tap water used contained
membrane of two different cells. The dots represent the
1% salt and 99% water, while the salt solution contained 6%
relative concentrations of this molecule.
salt and 94% water. Elodea cells normally contain 1% salt.
Which processes are illustrated in the diagrams?
a) phagocytosis and diffusion
b) pinocytosis and osmosis
c) active transport and diffusion
d) dehydration synthesis and circulation
24) Figure A represents a cell as viewed by a student using
the medium power objective of a compound light
microscope. Figure B represents the same cell as seen with a
different objective.
Ten minutes after the slides were prepared, a microscopic
examination of cells in leaves A and B would most likely
show evidence that
a) water had moved out of the cells of leaf B
b) water had moved into the cells of leaf A
c) salt had moved out of the cells of leaf B
d) salt had moved into the cells of leaf A
27) After a cookie has been digested, glucose molecules enter
the bloodstream by the process of
a) phagocytosis c) ingestion
b) diffusion
d) pinocytosis
28) The diagram below represents the fluid mosaic model of
a plasma membrane.
The magnification of the objective used to observe the cell
shown in figure B is most likely
a) low
b) high
c) super high
25) The diagram below represents cells seen in the lowpower field of view of a compound light microscope.
The length of one of these cells is approximately
a) 200 um
c) 500 um
b) 400 um
d) 2,000 um
What do letters X and Y indicate?
a) X indicates lipids and Y indicates
proteins.
b) X indicates pores and Y indicates
cellulose.
c) X indicates proteins and Y indicates
lipids.
d) X indicates nuclei and Y indicates
ribosomes.
29) A student observed several cell layers positioned on top
of one another in the high-power field of view of a compound
light microscope. To observe the details of only one of these
cell layers, the student should
a) move the slide from left to right
b) adjust the diaphragm to a smaller
opening
c) rotate the fine adjustment
d) turn the ocular
Cell Unit Study Guide
Page 5
30) A student needs 20 milliliters of water for an experiment.
How much additional water must the student add to the
graduated cylinder shown below to reach 20 milliliters?
a) 6.0 mL
b) 6.5 mL
c) 7.0 mL
d) 13.0 mL
31) Which factor contributed most to the development of the cell theory?
a)the discovery of many new species
during the last century
b) the development of advanced
techniques to determine the chemical
composition of substances
c) the increase in knowledge concerning
factors influencing the rate of evolution
d) the improvement in microscopes and
microscopic techniques during the last
two centuries
32) A white blood cell ingests, then digests, a number of
bacteria. Which cell organelles were directly responsible for
the digestion of the bacteria?
a) centrioles
c) ribosomes
b) lysosomes
d) mitochondria
Cell Unit Study Guide
Solutions
1) a
2) c
3) c
4) c
5) 4
6) b
7) b
8) d
9) b
10) a
11) b
12) a
13) d
14) c
15) a
16) c
17) d
18) c
19) c
20) b
21) b
22) b
23) c
24) a
25) b
26) a
27) b
28) c
29) c
30) c
31) d
32) b