Cell Unit Review
Question 1.
State one reason that most foods must be
digested before they can enter a cell?
Question 2.
The diagrams below represent two cells, x and Y.
B
B
C
C
(a) Select one lettered organelle and write the
letter of that organelle. Identify the organelle
you selected.
Question 2.
The diagrams below represent two cells, x and Y.
B
B
C
C
(b) State one function of the organelle that you
identified in part (a)
Question 3.
Identify one process that is carried out in cell
Y in the diagram that is not carried out in
cell X.
B
B
C
C
Question 4.
It was once thought that decaying meat turned into
maggots (fly larvae). Careful experimentation by
scientists demonstrated that maggots actually
come from fly eggs and not meat. These
experiments illustrate that new individuals result
only from
A)
B)
C)
D)
Nutrition and replication
Metabolic homeostasis
Reproduction and development
Genetic engineering
Question 5.
In a cell, all organelles work together to
carry out
A) Information storage
B) Diffusion
C) Metabolic processes
D) Active transport
Question 6.
Some human body cells are shown in the diagram below.
These groups of cells represent different
1) Tissues in which similar cells function together
2) Organelles that carry out different functions
3) Organs that help to carry out a specific life activity
4) Systems that are responsible for a specific life activity
Question 7.
Organelles carry out specific processes involving chemical reactions. In
the chart below identify two organelles and, for each, identify a
process involving chemical reactions that occurs there. Describe
one specific way each process identified is important to the
functioning of the organism.
Organelle
Process Involving
Chemical Reactions
How the Process is
Important
Question 8.
Muscle cells in athletes often have more mitochondria than
muscle cells in nonathletes. Based on this
observation, it can be inferred that the muscle cells in
athletes
A) Have a smaller demand for cell proteins than the
muscle cells of nonathletes
B) Have a greater demand for energy than the muscle
cells of nonathletes
C) Have nuclei containing more DNA than nuclei in the
muscle cells of nonathletes
D) Reproduce less frequently than the muscle cells of
nonathletes
Question 9.
After a hormone enters the bloodstream, it is
transported throughout the body, but the
hormone affects only certain cells. The reason
only certain cells are affected is that the
membranes of these cells have specific
A)
B)
C)
D)
Receptors
Carbohydrates
Tissues
Antibodies
Question 10.
The diagram below represents two single-celled
organisms.
These organisms carry out the activities needed to
maintain homeostasis by using specialized
internal
A) Tissues B) organs C) organelles D) systems
Question 11.
Plants in areas with short growing seasons often
have more chloroplasts in their cells than
plants in areas with longer growing seasons.
Compared to plants in areas with longer
growing seasons, plants in areas with shorter
growing seasons most likely
A)
B)
C)
D)
Make and store food more quickly
Have a different method of respiration
Grow taller
Have a higher rate of protein metabolism
Question 12.
In a cell, information that controls the
production of proteins must pass from
the nucleus to the
A) Mitochondria
B) Chloroplasts
C) Ribosomes
D) Cell membrane
Question 13.
Cellular communication is illustrated in the diagram below
Information can be sent from
A) Cell A to Cell B because cell B is able to recognize signal 1
B) Cell B to Cell A because cell B is able to recognize signal 2
C) Cell B to Cell A because cell A is able to recognize signal 1
D) Cell A to Cell B because cell A is able to recognize signal 2
Question 14.
Which substance are found on cell surfaces
and respond to nerve and hormone
signals?
A)
B)
C)
D)
Vitamins and minerals
Subunits of DNA
Receptor molecules
Starches and simple sugars
Question 15.
Hormones and secretions of the nervous
system are chemical messengers that
A)
B)
C)
D)
Store genetic information
Extract energy from nutrients
Coordinate system interactions
Carry out the circulation of materials
Question 16.
Every single-celled organism is able to
survive because it carries out
A)
B)
C)
D)
Autotrophic nutrition
Sexual reproduction
Metabolic activities
Heterotrophic nutrition
Question 17.
In multicelluar organisms, cells must be able to
communicate with each other. Structures that
enable most cells to communicate with each
other are known as
A)
B)
C)
D)
Chloroplasts
Pathogenic agents
Receptor molecules
Antibiotics
Question 18.
Studies of fat cells and thyroid cells show that fat
cells have fewer mitochondria than thyroid
cells. A biologist would most likely infer that fat
tissue
A) Requires more energy than thyroid tissue
B) Has energy requirements equal to those of
thyroid tissue
C) Does not require energy
D) Requires less energy than thyroid tissue
Question 19.
Which statement regarding the functioning of the
cell membrane of all organisms is not correct?
A) The cell membrane forms a boundary that
separates the cellular contents from the
outside environment.
B) The cell membrane forms a barrier that keeps
all substances that might harm the cell from
entering the cell.
C) The cell membrane controls the movement of
molecules into and out of the cell.
D) The cell membrane is capable of receiving and
recognizing chemical signals.
Question 20.
While viewing a slide of rapidly moving sperm
cells, a student concludes that these cells
require large amounts of energy to maintain
their activity. The organelles that most directly
provide this energy are known as
A)
B)
C)
D)
Ribosomes
Chloroplasts
Mitochondria
Vacuoles
Question 21.
In the given diagram of a single-celled
organism, that arrows indicate various
activities taking place.
Which systems perform these same activities
in humans?
1)
2)
3)
4)
Respiratory, nervous and endocrine
Excretory, respiratory, and reproductive
Digestive, circulatory, and immune
Respiratory, excretory, and digestive