Chapter 22: Q. 10 (page 570)
Which of the following consist of prokaryotic cells?
a. bacteria and fungi
b. archaea and fungi
c. protists and animals
d. bacteria and archaea
The prokaryotic cells are the bacteria and archaea.
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Think about the conditions (temperature, light, pressure, and organic and inorganic materials) that you may find in a deep-sea hydrothermal vent. What type of prokaryotes, in terms of their metabolic needs (autotrophs, phototrophs, chemotrophs, etc.), would you expect to find there?
Halophiles are organisms that require________.
a. a salt concentration of at least 0.2 M
b. high sugar concentration
c. the addition of halogens
d. all of the above
The lipopolysaccharide layer (LPS) is a characteristic of the wall of ________.
a. archaean cells
b. Gram-negative bacteria
c. bacterial prokaryotic cells
d. eukaryotic cells
Which of these statements is true?
An antibiotic is any substance produced by a
organism that is antagonistic to the growth of
prokaryotes.
An antibiotic is any substance produced by a
prokaryote that is antagonistic to the growth of
other viruses.
An antibiotic is any substance produced by a
prokaryote that is antagonistic to the growth of
eukaryotic cells.
An antibiotic is any substance produced by a
prokaryote that prevents growth of the same prokaryote.
Many of the first prokaryotes to be cultured in a scientific lab were human or animal pathogens. Why would these species be more readily cultured than non-pathogenic prokaryotes?
a. Pathogenic prokaryotes are hardier than nonpathogenic prokaryotes.
b. Non-pathogenic prokaryotes require more supplements in their growth media.
c. Most of the necessary culture conditions could be inferred for pathogenic prokaryotes.
d. Pathogenic bacteria can grow as free bacteria, but non-pathogenic bacteria only grow as parts of large colonies.
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