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Unicellular Vs. Multicellular Organisms
Test Description: Unit Test 4 part 2
Instructions: Answer all questions to get your test result.
1) complex organisms require a large number of cells that
A
resist being attacked by viruses and bacteria
B
will keep the organism warm
C
are specialized and work together
D
can retain more water than a small number of cells
2) Which must be present in order for something to be classified as an organism?
A
organelle
B
organ
C
cell
D
nucleus
3) An organism such as a nematode worm may have only 1000 cells. It should be classified as being
A
a virus
B
unicellular
C
multicellular
D
a bacteria
4) What is the most likely function of a cell that is shaped like the root and stem of a tree?
A
to carry impulses throughout the body
B
to provide structure and support
C
to provide a cover over body tissues
D
to carry blood throughout the body
5) Which parts of a plant function as an organ?
A
root hairs
B
spores
C
chlorophyll molecules
D
leaves
6) An elephant is a multicellular organism that weighs about 200 pounds at birth and can grow to weigh as much as 15,000 pounds. What increases as the elephant grows into an adult?
A
the number of cells in the body
B
the size of each body cell
C
the collection of water in each cell
D
the amount of energy in its cells
7) Scientists found a new species of a complex organism at the bottom of the ocean. The organism most likely
A
is made of multiple cells
B
is unicellular
C
is a form of bacteria
D
lacks an organized nucleus
8) Which statement about all living organisms is true?
A
They have limbs
B
they have at least one cell
C
they breathe air
D
They produce their own food
9) Which of the following represents the smallest level or organization in the body?
A
a muscle cell
B
the heart
C
cardiac muscle tissue
D
the circulatory system
10) Which is the term given to a projection of cytoplasm, or false foot, used by some protists for feeding or movement?
A
flagellum
B
cilia
C
trichocyst
D
pseudopod
*select an answer for all questions
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