Chapter 3:
Exchanging Materials with the Environment
Practice Test
1.
What are small openings in the surface of a plant's leaves that allow gas exchange?
a.
alveoli
b.
stomates
c.
spiracles
d.
cuticles
Hint
2.
What is the waste fluid that drains from the kidneys through the ureters?
a.
bile
b.
blood
c.
plasma
d.
urine
Hint
3.
What is the outward pressure of a cell against its own cell wall?
a.
diffusion
b.
metabolism
c.
osmosis
d.
turgor
Hint
4.
What is the movement of molecules from an area of high concentration to an area of lower concentration?
a.
cytoplasm
b.
diffusion
c.
metabolism
d.
entropy
Hint
5.
What are the excretory tubules of humans?
a.
nephrons
b.
neurons
c.
tracheae
d.
gills
Hint
6.
Suppose you are shipwrecked and have no fresh water to drink. Why is drinking sea water not a good idea?
a.
Sea water causes the urinary bladder to explode.
b.
The kidneys retain water when they excrete excess salt.
c.
The kidneys lose water when they excrete excess salt.
d.
Sea water causes saliva in your mouth to dry up.
Hint
7.
For gas exchange to occur between cells and the environment, what must first occur?
a.
Gases must move into the cell by active transport.
b.
Gases must be dissolved in phospholipids.
c.
Gases must be dissolved in water.
d.
Gases must move into the cell by endocytosis.
Hint
8.
What are proteins embedded in the cell membrane that help move materials into and out of the cell?
a.
glycoproteins
b.
transport proteins
c.
transit proteins
d.
glycolipids
Hint
9.
When a membrane regulates the exchange of materials in a specific way, it is called a(n) ____________________ membrane .
a.
diffuse
b.
impermeable
c.
selectively permeable
d.
selectively impenetrable
Hint
10.
What body system in humans is composed of the kidneys, the blood vessels that serve them, the ureters, the bladder, and the urethra?
a.
urinary system
b.
circulatory system
c.
endocrine system
d.
digestive system
Hint
