Chapter 3:
Exchanging Materials with the Environment
Practice Test
1.
Which of these is NOT a function of a nephron?
a.
reabsorption
b.
secretion
c.
transportation
d.
filtration
Hint
2.
What is the waxy covering that reduces water loss from a leaf?
a.
alveolus
b.
gill
c.
cuticle
d.
stomate
Hint
3.
What is the tendency for an organism to maintain a relatively stable internal environment?
a.
entropy
b.
homeostasis
c.
diffusion
d.
turgor
Hint
4.
What body system in humans is composed of the kidneys, the blood vessels that serve them, the ureters, the bladder, and the urethra?
a.
digestive system
b.
circulatory system
c.
urinary system
d.
endocrine system
Hint
5.
What are proteins embedded in the cell membrane that help move materials into and out of the cell?
a.
glycolipids
b.
transport proteins
c.
glycoproteins
d.
transit proteins
Hint
6.
What hormone regulates the excretion of sodium and potassium from the body?
a.
testosterone
b.
aldosterone
c.
adrenaline
d.
antidiuretic hormone
Hint
7.
What is the movement of molecules from an area of high concentration to an area of lower concentration?
a.
diffusion
b.
entropy
c.
cytoplasm
d.
metabolism
Hint
8.
What fills the interior of a cell?
a.
nucleus
b.
cytoplasm
c.
water
d.
vacuole
Hint
9.
What are the excretory tubules of humans?
a.
tracheae
b.
nephrons
c.
gills
d.
neurons
Hint
10.
What is movement of substances into and out of cells against their concentration gradients?
a.
osmosis
b.
facilitated diffusion
c.
passive transport
d.
active transport
Hint
