In essentially all organisms, the AUG codon codes for:a
the initiation of translation.
b. the termination of transcription.
c. the termination of chain elongation.
d. the amino acid valine.
e. a termination tRNA molecule
A
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During DNA replication, all of the following proteins are important for separating the DNA strands and allowing movement of the replication fork EXCEPT
A. DNA polymerase. B. helicase. C. topoisomerase. D. single-stranded binding proteins. E. both helicase and topoisomerase.
mRNA regulation can be achieved at the level of
A) transport. B) processing. C) translation. D) life span (degradation). E) All of these
As plant cells rely on energy obtained directly from the sun to carry out any cellular processes, sugars are only used as backup energy sources for plants on cloudy days.
a. true b. false
The type of microscope in which you would see brightly illuminated specimens against a black background is
A) Fluorescence B) Phase-contrast C) Electron D) Bright-field E) Dark-field