How can we help?

You can also find more resources in our Help Center.

8 terms

Chapter 4 Mastering Micro

STUDY
PLAY
Which of these statements is true regarding plasmids?
a. Prokaryotic plasmids are NOT passed from one cell to another during replication.
b. Plasmids, which are associated with membrane proteins, depend on bacterial chromosomal DNA for replication.
c. Plasmids are usually circular pieces of RNA.
d. Prokaryotic plasmids may carry genes that provide antibiotic resistance to the cell.
d. Prokaryotic plasmids may carry genes that provide antibiotic resistance to the cell.
Which of the following is NOT a characteristic of prokaryotic cytoplasm?
a. DNA
b. Inclusions
c. Ribosomes
d. Cytoplasmic streaming
d. Cytoplasmic streaming
What is the mechanism of action of penicillin in a prokaryotic cell?
a. Penicillin affects chromosomal replication in prokaryotes.
b. Penicillin weakens the cell wall.
c. Penicillin affects the ability of the basal body in prokaryotic flagella to function properly, severely degrading cellular motility.
d. Penicillin reduces the efficiency of prokaryotic fimbriae, preventing attachment of pathogenic bacteria to structures such as the intestinal lining.
b. Penicillin weakens the cell wall.
Which of the following statements regarding prokaryotic fimbriae is true?
a. Fimbriae may occur either at the poles of a bacterial cell, or can be evenly distributed over the entire surface.
b. There are usually only one or two fimbriae per prokaryotic cell, when fimbriae are present.
c. Fimbriae are involved in motility in prokaryotic cells.
d. Fimbriae in prokaryotes are often involved in DNA transfer.
a. Fimbriae may occur either at the poles of a bacterial cell, or can be evenly distributed over the entire surface.
Tumbles occur when
a. the flagella rotate counterclockwise.
b. the flagella rotate clockwise.
c. the flagella stop rotating.
d. the flagella undulate.
b. the flagella rotate clockwise
Which of the following types of bacterial cells would have only a single flagellum?
a. Lophotrichous and monotrichous
b. Monotrichous
c. Lophotrichous
d. Peritrichous
e. Amphitrichous
b. Monotrichous
Peritrichous bacteria make a run when
a. the flagella turn counterclockwise and become bundled.
b. the flagella turn clockwise and become bundled.
c. the flagella turn clockwise and separate.
d. the flagella turn counterclockwise and separate.
a. the flagella turn counterclockwise and become bundled.
Which of the following types of bacterial cells would have flagella located at only one end of the cell?
a.Peritrichous
b. Lophotrichous and monotrichous
c. Amphitrichous
d. Monotrichous and amphitrichous
e. Monotrichous
f. Lophotrichous
b. Lophotrichous and monotrichous