______ are the only active biological agents lacking any nucleic acid (DNA or RNA).

A) Viriods
B) Prions
C) Satellite viruses
D) Virions
B) Prions

How do


B) Prions

Biology & Microbiology

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A muscle that decreases the angle between two bones at a joint is called a(n)

a. flexor. b. agonist. c. depressor. d. antagonist. e. extensor.

Biology & Microbiology

What fraction of the time will the cross of Aa Bb Cc with Aa Bb Cc produce an offspring that

expresses all three dominant genes? a. 3/64 b. 1/16 c. 1/8 d. 9/64 e. 27/64

Biology & Microbiology

Which portion of Figure 43-3 would be connected to the oval window?


a. 1
b. 2
c. 3
d. 6
e. 8

Biology & Microbiology

Whether a cell lives or dies after a particular event depends to a large degree on ________ between ________ and _________ signals.

a) the balance, mitotic, cytokinetic b) the balance, proapoptotic, antiapoptotic c) the differences, on, off d) the differences, mitotic, cytokinetic e) the similarities, proapoptotic, antiapoptotic

Biology & Microbiology