Which of the following are found exclusively in the nucleus of a cell?

a. DNA
b. mRNA
c. proteins
d. tRNA


A

Biology & Microbiology

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An activator is present and results in the increase in transcription of the target gene. This is an example of _______________

A. termination B. positive control C. negative control D. feedback inhibition

Biology & Microbiology

The active site of DNA polymerase is similar in ____

a. archaea and bacteria only b. archaea, bacteria, and eukaryotes c. archaea and eukaryotes only d. none of these groups e. bacteria and eukaryotes only

Biology & Microbiology

The first plant to colonize the plains of Mount Saint Helens after this volcano erupted in 1980 was a prairie lupine

The prairie lupine is therefore an example of ____.

a. a secondary successor b. a pioneer species c. a keystone species d. an exotic species e. an introduced species

Biology & Microbiology

A drop to pH 4.0 in the duodenum would primarily stimulate the release of ________.

A. gastrin B. insulin C. secretin D. pepsin E. cholecystokinin

Biology & Microbiology