Chapter 15:
Viruses and Microorganisms
Practice Test
1.
What is a relationship in which both organisms benefit?
a.
predation
b.
parasitism
c.
decomposition
d.
mutualism
Hint
2.
Which of these is NOT a characteristic of protists?
a.
Some are unicellular, others are multicellular.
b.
They are all prokaryotes.
c.
They are all eukaryotes.
d.
Some are heterotrophic, others are autotrophic.
Hint
3.
All viruses are composed of an outer protein coat and a _________.
a.
nucleic acid
b.
mineral
c.
layer of lipids
d.
carbohydrate
Hint
4.
What is the name given to the "false feet" of animal-like protists?
a.
pseudopodia
b.
ciliates
c.
plasmodium
d.
rhizopods
Hint
5.
What are organisms that feed on dead organisms or other organic wastes?
a.
parasites
b.
saprophytes
c.
autotrophs
d.
hosts
Hint
6.
Where could you expect to find methane-producing bacteria?
a.
underwater near thermal vents
b.
in the digestive tract of cattle
c.
in salt lakes
d.
in hot sulfur springs
Hint
7.
Yeasts, cup fungi, and powdery mildews all have a(n) _____ in which spores are produced.
a.
hypha
b.
ascus
c.
rhizoid
d.
basidia
Hint
8.
Which of these are club-shaped structures of fungi in which sexual spores are formed?
a.
basidia
b.
mycelia
c.
rhizoids
d.
hyphae
Hint
9.
What are organisms that live in or on other organisms?
a.
saprophytes
b.
parasites
c.
hosts
d.
autotrophs
Hint
10.
How do blue-green bacteria obtain energy?
a.
through parasitism
b.
by photosynthesis
c.
by chemosynthesis
d.
through predation
Hint
