Why are viruses considered to be nonliving?

(A) They do not have cells
(B) They cannot reproduce on their own
(C) They have no metabolic activity
(D) All of the above


Answer: (D) All of the above

Biology & Microbiology

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Four of the five choices listed below are

characteristics of the plasma membrane. Select the exception. a. phospholipid b. fluid mosaic c. lipid bilayer d. inert and impermeable e. hydrophobic tails

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photoautotrophs (certain plants & bacteria)

What will be an ideal response?

Biology & Microbiology

Identify and provide specific examples of the classes of macromolecules that are associated with life.

What will be an ideal response?

Biology & Microbiology

Algae and protozoa in the soil are quite hardy, and therefore their abundance is not a useful indicator of environmental pollution

Indicate whether the statement is true or false

Biology & Microbiology