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Answers: 1. Which of the following places support prokaryotic life?
a. radioactive dirt
b. deep Earth rock
c. cow intestines
d. glaciers
e. all of the above
Score: 1 of 1
2. Archaea is a diverse group of organisms that have the ability to live in extreme
environments that often lack oxygen. Which of the following is potentially
metabolized by Archaea around hydrothermal vents?
a. carbon dioxide
b. methane
c. hydrogen
d. a and b
e. a, b, and c
Score: 1 of 1
3. Humans belong to the domain Eukarya; therefore, humans are more closely
related to than .
a. Extremia; Archaea
b. Archaea; Extremia
c. Bacteria; Archaea
d. Archaea; Bacteria
e. Humans aren't more closely related to any one of these than to any
one of the other.
Score: 1 of 1
, BIOL 102: CHAPTER 18 QUESTIONS WTH ANSWERS 100% CORRECT
RATED A+
4. Why is it hard for scientists to study hyperthermophil behavior in
the laboratory?
a. Hyperthermophils can survive only at very high temperatures
that are difficult to replicate in a lab setting.
b. Hyperthermophils are physically identical to bacteria, making it hard
to identify in a lab setting.
c. Hyperthermophils have a short life cycle, which makes it hard
to study one particular organism.
d. Hyperthermophils can survive only at very low temperatures, which
are difficult to replicate in a lab setting.
e. none of the above
Score: 1 of 1
5. Where is prokaryotic life found around hydrothermal vents?
a. only at the base of the vents away from the high water
temperature found at the top of the vent
b. only at the top of the vents where the water temperatures are high
c. coating the outside of the entire vent structure
d. coating the inside of the entire vent structure
e. c and d
Score: 1 of 1
6. Which of the following statements regarding bacteria is FALSE?
a. Bacteria are essential to life on Earth.
b. Certain bacteria obtain their energy from inorganic gases.
c. Bacteria often have a symbiotic relationship with other organisms.
d. a and b
e. a, b, and c
Score: 0 of 1
7. Which of the following is a mobility adaptation that bacteria have developed?
a. flagella
b. a capsule
c. pili