OpenStax Microbiology Test Bank
Chapter 5: The Eukaryotes of Microbiology
Chapter 5: The Eukaryotes of Microbiology
* = Correct answer
Multiple Choice
1. Protozoa are best described as being:
A. nonphotosynthetic multicellular microorganisms
B. nonphotosynthetic unicellular microorganisms*
C. photosynthetic multicellular microorganisms
D. photosynthetic unicellular microorganisms
Difficulty: Easy
ASM Standard: 9
2. Which of the following best describes zooplankton?
A. eukaryotes that are nonphotosynthetic and motile*
B. eukaryotes that are photosynthetic and motile
C. prokaryotes that are nonphotosynthetic and nonmotile
D. prokaryotes that are photosynthetic and nonmotile
Difficulty: Easy
ASM Standard: 9
3. Where is the pellicle found within a protozoan?
A. as part of cilia
B. beneath the cell membrane*
C. surrounding the nucleus
D. within chloroplasts
Difficulty: Easy
ASM Standard: 13
4. Which of the following is not a structure used for locomotion by protists?
A. cilia
B. contractile vacuoles*
C. flagella
D. pseudopods
Difficulty: Moderate
ASM Standard: 9
5. Which structures associated with locomotion in protists can be described as short, hair-like
structures that extend from the surface of the cell?
A. cilia*
B. contractile vacuoles
Page 1 of 15
, OpenStax Microbiology Test Bank
Chapter 5: The Eukaryotes of Microbiology
C. flagella
D. pseudopods
Difficulty: Easy
ASM Standard: 9
6. Pseudopod formation requires which cytoskeletal component?
A. actin filaments*
B. collagen fibers
C. intermediate filaments
D. microtubules
Difficulty: Moderate
ASM Standard: 9
7. The organelle in protists that regulates osmolarity is known as which of the following?
A. contractile vacuole*
B. hydrogenosome
C. kinetoplasmid
D. plasmalemma
Difficulty: Easy
ASM Standard: 12
8. Cytoprocts are specialized structures that carry out which cellular process?
A. endocytosis
B. exocytosis*
C. phagocytosis
D. syngamy
Difficulty: Moderate
ASM Standard: 12
9. Which organism is best known as the “brain-eating amoeba”?
A. Acanthamoeba keratitis
B. Entamoeba histolytica
C. Giardia lamblia
D. Naegleria fowleri*
Difficulty: Moderate
ASM Standard: N/A
10. An important slime mold used in research is Dictyostelium discoideum. In this species,
individual amoeboid cells that aggregate into multicellular mobile slugs, each forming a
fruiting body that produces haploid spores, are known as which of the following?
A. cellular slime molds*
Page 2 of 15
Chapter 5: The Eukaryotes of Microbiology
Chapter 5: The Eukaryotes of Microbiology
* = Correct answer
Multiple Choice
1. Protozoa are best described as being:
A. nonphotosynthetic multicellular microorganisms
B. nonphotosynthetic unicellular microorganisms*
C. photosynthetic multicellular microorganisms
D. photosynthetic unicellular microorganisms
Difficulty: Easy
ASM Standard: 9
2. Which of the following best describes zooplankton?
A. eukaryotes that are nonphotosynthetic and motile*
B. eukaryotes that are photosynthetic and motile
C. prokaryotes that are nonphotosynthetic and nonmotile
D. prokaryotes that are photosynthetic and nonmotile
Difficulty: Easy
ASM Standard: 9
3. Where is the pellicle found within a protozoan?
A. as part of cilia
B. beneath the cell membrane*
C. surrounding the nucleus
D. within chloroplasts
Difficulty: Easy
ASM Standard: 13
4. Which of the following is not a structure used for locomotion by protists?
A. cilia
B. contractile vacuoles*
C. flagella
D. pseudopods
Difficulty: Moderate
ASM Standard: 9
5. Which structures associated with locomotion in protists can be described as short, hair-like
structures that extend from the surface of the cell?
A. cilia*
B. contractile vacuoles
Page 1 of 15
, OpenStax Microbiology Test Bank
Chapter 5: The Eukaryotes of Microbiology
C. flagella
D. pseudopods
Difficulty: Easy
ASM Standard: 9
6. Pseudopod formation requires which cytoskeletal component?
A. actin filaments*
B. collagen fibers
C. intermediate filaments
D. microtubules
Difficulty: Moderate
ASM Standard: 9
7. The organelle in protists that regulates osmolarity is known as which of the following?
A. contractile vacuole*
B. hydrogenosome
C. kinetoplasmid
D. plasmalemma
Difficulty: Easy
ASM Standard: 12
8. Cytoprocts are specialized structures that carry out which cellular process?
A. endocytosis
B. exocytosis*
C. phagocytosis
D. syngamy
Difficulty: Moderate
ASM Standard: 12
9. Which organism is best known as the “brain-eating amoeba”?
A. Acanthamoeba keratitis
B. Entamoeba histolytica
C. Giardia lamblia
D. Naegleria fowleri*
Difficulty: Moderate
ASM Standard: N/A
10. An important slime mold used in research is Dictyostelium discoideum. In this species,
individual amoeboid cells that aggregate into multicellular mobile slugs, each forming a
fruiting body that produces haploid spores, are known as which of the following?
A. cellular slime molds*
Page 2 of 15
