Chapter 17:
Basic Units of Life
Practice Test
1.
What is the process by which a nucleus of a cell divides, producing two nuclei, called?
a.
reproduction
b.
mitosis
c.
division
d.
cloning
Hint
2.
Plant cells have a thick structure outside the cell membrane. What is the structure called?
a.
plant wall
b.
chloroplast
c.
chlorophyll
d.
cell wall
Hint
3.
In stage three of mitosis, what happens to the chromosomes?
a.
They move to the center of the cell.
b.
They split apart and go to opposite ends of the cell.
c.
They disappear.
d.
They make a copy of themselves.
Hint
4.
Which structure is the command center of the cell?
a.
nucleus
b.
mitochondria
c.
chromosomes
d.
cytoplasm
Hint
5.
What is the basic unit of life in all living things?
a.
a nerve
b.
a cell
c.
blood
d.
energy
Hint
6.
Where do food and oxygen enter a cell?
a.
in the cytoplasm
b.
in a vacuole
c.
through the nucleus
d.
through the cell membrane
Hint
7.
Cells perform many functions. What is the job of nerve cells?
a.
to tell you when something hurts
b.
to stimulate the body
c.
to produce antibodies
d.
to pass messages from nerve cell to nerve cell
Hint
8.
When are chromosomes visible?
a.
when the cell is eating
b.
when the cell is digesting food
c.
when the cell is dying
d.
when the cell is dividing
Hint
9.
What development greatly advanced the study of cells?
a.
prepared specimens
b.
a slide
c.
the electron microscope
d.
a hand lens
Hint
10.
Which of the following is NOT a trait of living things?
a.
ability to grow
b.
ability to reproduce
c.
ability to move
d.
ability to respond to change
Hint
11.
Where do many of the cell's activities take place?
a.
in a vacuole
b.
in chromosomes
c.
in the cytoplasm
d.
in the mitochondria
Hint
12.
Cells require energy. What structures enable cells to release energy?
a.
cell membranes
b.
cell walls
c.
vacuoles
d.
mitochondria
Hint
13.
Name the two basic cell types.
a.
plant and animal
b.
blood and skin
c.
round and rectangle
d.
muscle and nerve
Hint
14.
Where is chlorophyll located?
a.
in chloroplasts
b.
in the nucleus
c.
in vacuoles
d.
in chromosomes
Hint
15.
What is the end result of mitosis?
a.
two identical new cells
b.
one parent and one baby
c.
in vacuoles
d.
all of the above
Hint
