Transcript ch 27 clicker questions

CLICKER QUESTIONS
For CAMPBELL BIOLOGY, NINTH EDITION
Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Chapter 27
Bacteria and Archaea
Click to edit Master title style
Click to edit Master subtitle style
Questions prepared by
William Wischusen
Louisiana State University
Michael Dini
Texas Tech University
© 2011 Pearson Education, Inc.
Prokaryotes lack the nucleus found in
eukaryotic cells. As a result, prokaryotic cells
do not contain which of the following?
a) a nuclear membrane
b) DNA
c) one or more chromosomes
d) all of the above
© 2011 Pearson Education, Inc.
Which of the following statements best
describes most bacteria?
a) They are generally harmful.
b) They are limited to living in a few habitats.
c) They are very common in the environment.
d) They are responsible for the “common cold.”
© 2011 Pearson Education, Inc.
Which features of bacteria can be considered
to be defensive structures?
© 2011 Pearson Education, Inc.
What are the features of prokaryotes that
enable them to adapt so quickly?
© 2011 Pearson Education, Inc.
Which of these is LEAST associated with
prokaryotes engaged together in metabolic
cooperation?
a) Mutualism
b) Biofilms
c) Symbiosis
d) Commensalism
© 2011 Pearson Education, Inc.
What is true of archaeans?
a) They are the cause of many human diseases.
b) Structurally, they represent an intermediate form
between bacteria cells and eukaryotic cells.
c) They are extremophiles.
d) They have undergone horizontal gene transfer
with bacteria and with eukaryotes.
e) They include Earth’s first aerobic
photosynthesizers.
© 2011 Pearson Education, Inc.
Cyanobacteria that can perform nitrogen
fixation
a) use this metabolic pathway to provide
themselves with glucose.
b) cannot also perform aerobic photosynthesis.
c) provide both fixed nitrogen and fixed carbon
dioxide to other organisms.
d) do so on membranes called thylakoids.
e) are part of the community of organisms at deepsea vents.
© 2011 Pearson Education, Inc.
A bacterium that contains both R plasmids and
F plasmids
a) can transfer antibiotic resistance genes to other
bacteria via conjugation.
b) must be pathogenic.
c) therefore has the ability to make and spread
restriction enzymes to counter phage attacks.
d) is, therefore, an Hfr cell.
e) can undergo genetic recombination only by
performing conjugation.
© 2011 Pearson Education, Inc.