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Exam-Biology 1108 Exam 2|Protists-plants-fire (no fungi) Qs & As
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Exam-Biology 1108 Exam 2|Protists-plants-fire (no fungi) Qs & As
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Exam-Biology 1108 Exam 2|Protists-plants-fire (nofungi) Qs & As
Prokaryote vs. Eukaryote cells CORRECT ANS-prokaryotes: archea & bacteria, unicellular,
no membrane bound organelles, nucleus, nucleoid
eukaryotes: multicellular, membrane bound organelles
Bioremediation & examples CORRECT ANS-life. bring back make things better. - remove
pollutants from the environment. examples: crime scene cleanup, contaminated soil cleanup.
Endotoxins are CORRECT ANS-INside released by the living bacteria.
Exotoxins are CORRECT ANS-OUTside released by living bacteria. It can be fatal.
lateral gene transfer CORRECT ANS-Horizontal. -transformation- transfers plasmids &
chromosomes back & forth.
conjugation- shared between the sex pilus.
transduction- transfers via bacteria phages.
, Exam-Biology 1108 Exam 2|Protists-plants-fire (no
fungi) Qs & As
Koch's Postulates CORRECT ANS-Set of rules for proving that a microorganism causes a
specific disease.
Why are viruses not considered living? CORRECT ANS-Viruses are NOT cells—(remember
that cells are the smallest things that can be
considered alive)—viruses do not have organelles, they do not have a metabolism, and they
cannot reproduce outside of a host cell.
Why could viruses be considered living? CORRECT ANS-they have a little more than dna or
sometimes rna enclosed by a protective coat, but they have to a host to reproduce otherwise
they're called virons, which is dormant stage.
What are the 3 domains of life? CORRECT ANS-1. Bacteria
2. Archaea
3. Eukarya
What is a prion? CORRECT ANS-an infectious protein. SLOW- ACTING. It can be transferred
to a human & animals. A particular microorganism causes a disease. mad cow disease.
, Exam-Biology 1108 Exam 2|Protists-plants-fire (no
fungi) Qs & As
Photoautotrophs use CORRECT ANS-light as an energy source and CO2 as a carbon source
which of the following statements is not true?
A. Archea and bacteria have different membrane lipids.
B. the cell walls of archea lack peptioglycadon
C. only bacteria have histones associated with DNA.
D. only some archea use CO2 to oxidize h2, releasing methane. CORRECT ANS-C. only
bacteria have histones associate with dna.
they are not found in bacteria.
which of the following involves metabolic cooperation among prokaryotic cells?
a. binary fission
b. endospore formation
c. biofilms
d. photoautotrophy CORRECT ANS-C. biofilms
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