Chapter 19:
How Cells Do Their Jobs
Practice Test
1.
Which structure is the site for respiration?
a.
mitochondria
b.
cell membrane
c.
vacuole
d.
nucleus
Hint
2.
What is the most basic level of organization?
a.
organs
b.
tissue
c.
cells
d.
simple
Hint
3.
What do most food chains start?
a.
on land
b.
with plants
c.
in water
d.
with animals
Hint
4.
What is the original source of energy for the activities of all living things?
a.
water
b.
the sun
c.
carbohydrates
d.
food
Hint
5.
When molecules move from an area of high concentration to an area of low concentration, what is happening?
a.
equilibrium
b.
molecule travel
c.
diffusion
d.
osmosis
Hint
6.
What is equilibrium?
a.
a higher concentration of molecules in the cytoplasm
b.
a lower concentration of molecules outside the cell membrane
c.
equal concentrations of molecules on both sided of the cell membrane
d.
a higher concentration of molecules
Hint
7.
Humans have five levels of organization. What is the third level called?
a.
organs
b.
organism
c.
tissue
d.
organ systems
Hint
8.
What occurs if energy is required to move materials through the cell membrane?
a.
diffusion
b.
passive transport
c.
active transport
d.
osmosis
Hint
9.
During fermentation, what is NOT used to break down glucose that is used during respiration?
a.
oxygen
b.
sugar
c.
energy
d.
water
Hint
10.
Which of the following is NOT an example of an organ system?
a.
respiratory
b.
blood
c.
circulatory
d.
nervous
Hint
11.
Where would you find the fewest mitochondria?
a.
muscle cells
b.
brain cells
c.
nerve cells
d.
skin cells
Hint
12.
What do scientists call similar types of cells that work together to perform the same function?
a.
tissues
b.
organs
c.
organ systems
d.
organisms
Hint
13.
What passes through the cell membrane during osmosis?
a.
food
b.
phosphorus
c.
salt
d.
water
Hint
14.
The cell membrane allows some substances to pass through but not all substances. What is this called?
a.
fermentation
b.
osmosis
c.
diffusion
d.
selective permeability
Hint
15.
What is broken down during respiration?
a.
oxygen
b.
glucose
c.
energy
d.
food
Hint
