Fibers of the cytoskeleton are composed of primarily
A) proteins.
B) nucleic acids.
C) lipids.
D) ER.
E) polysaccharides.
A
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Water potential in plants consists mainly of _____
A) solute potential and osmotic potential B) solute potential and membrane potential C) pressure potential and solute potential D) pressure potential and membrane potential E) solute potential only
Which of the following types of molecules is LEAST involved in cell communication?
A. carbohydrates B. lipids C. steroids D. proteins E. neurotransmitters
Scanning electron microscopy (SEM) ________.
a. can be used to view biomolecules at the atomic level b. requires no special treatment of the specimen c. provides a three-dimensional image of a cell's surface d. is used to view internal cellular structure
Even though biology is a broad field of study, ______ serves as a central theme that unifies all of biology.
A. regulation B. response to the environment C. order D. evolution