Unit 1: Unicellular vs. Multicellular Organisms
Name:
1.
2.
Date:
Which structure, composed mainly of proteins and
lipids, aids in maintaining homeostasis in a cell?
A.
chromosome
B.
C.
cell membrane
D. nucleolus
3.
Which cellular organelle is represented by the
diagram?
centrosome
The diagram shown represents a section of
a plasma membrane. What does structure X
represent?
A.
protein
B.
C.
lipid
D. glycogen
4.
glucose
A.
ribosome
B.
centriole
C.
plasma membrane
D. cell wall
Which statement best compares a multicellular
organism to a single-celled organism?
A.
A multicellular organism has organ systems
that interact to carry out life functions, while
a single-celled organism carries out life
functions without using organ systems.
B.
A single-celled organism carries out fewer life
functions than each cell of a multicellular
organism.
C.
A multicellular organism always obtains
energy through a process that is di erent from
that used by a single-celled organism.
D. The cell of a single-celled organism is always
much larger than an individual cell of a
multicellular organism.
page 1
5.
Single-celled organisms are able to maintain
internal stability because they
A.
have multiple organ systems
B.
work with other cells
C.
contain structures that perform life functions
8.
Base your answer(s) to the following question(s)
on the information below and on your knowledge
of biology.
A wet-mount slide of red onion cells is
studied using a compound light microscope. A
drawing of one of the cells as seen under high
power is shown below.
D. carry out photosynthesis to produce food
On the diagram below, label the location of each
of the cell structures listed.
6.
Base your answer(s) to the following question(s)
on the two di erent cells shown below. Only
cell A produces substance X. Both cells A and B
use substance X.
Identify substance X.
7.
The largest amount of DNA in a plant cell is
contained in
A.
a nucleus
B.
a chromosome
C.
a protein molecule
D. an enzyme molecule
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Unit 1: Unicellular vs. Multicellular Organisms
9.
The diagram below represents a specialized cell
located in the root of a plant. The arrows in the
diagram indicate the movement of molecules of
oxygen and water into the cell.
Which row in the chart below correctly identi es
the process responsible for the movement of each
type of molecule represented in the diagram?
Row
Water
Oxygen
(1)
di usion
active transport
(2)
di usion
di usion
(4)
active transport
active transport
(3)
A.
active transport
(1)
B.
(2)
di usion
C.
(3)
D. (4)
page 3
Unit 1: Unicellular vs. Multicellular Organisms