A defective ribosome would have the MOST detrimental effect on

A. translation.

B.
replication.

C.
transcription.

D.
replication and transcription.

E.
replication and translation.


A. translation.

Biology & Microbiology

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When threshold potential is reached, which of the following occurs?

a. The activation gates of Na+ channels close. b. The inactivation gates of Na+ channels close. c. The activation gates of K+ channels close. d. The inactivation gates of Na+ channels close. e. Na+/K+ active transport pumps are activated.

Biology & Microbiology

The development of normal maternal behavior in female mice depends on interactions between the female and her young and the presence of a gene called fosB. In mice with functional fosB genes, a sequence of events occurs after babies are born.

Arrange the events in their normal sequence following the birth of baby mice for a wildtype female.  ___  Female crouches over young and retrieves them if they leave the nest. ___  Auditory, olfactory, and tactile signals about the young are sent to the hypothalamus. ___  Neural circuitry within the hypothalamus is modified, facilitating maternal behavior. ___  Female inspects newborns. ___  The gene fosB is activated, producing protein that activates other genes.

Biology & Microbiology

What is the life history adaptation called where organisms produce offspring several times over many seasons?

A. Iteroparity B. Alloparity C. Polyparity D. Biparity E. Semelparity

Biology & Microbiology

Which of the following cell types do not contain a nucleus?

A. Prokaryotes B. Eukaryotes C. Plant cells D. Protists

Biology & Microbiology