Archaeans are similar to bacteria in all of the
following ways EXCEPT
a. size.
b. shape.
c. membrane phospholipids.
d. absence of a nucleus.
e. presence of operons.
Answer: c
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Spontaneous reactions have a _____________ G
A. positive B. negative C. zero
Which is not true of the cytoplasmic membrane?
A. It defines the boundaries of the cell. B. It is a semipermeable barrier. C. It consists mainly of a fixed, static, phospholipid bilayer. D. It uses proteins as selective gates and sensors. E. All of the choices are true.
Bacteriorhodopsin is a light-sensitive pigment
found in ____ archaeans and used to supply energy for ____ production. a. halophilic; ATP b. thermophilic; carbohydrate c. methanogenic; methane d. halophilic; carbohydrate e. thermophilic; ATP
Lithotrophy: Inorganic e- Donors
What will be an ideal response?