The bacterial Shine-Dalgarno mRNA sequence is:
A. a translation termination signal.
B. the ribosomal binding site.
C. a translational elongation factor.
D. a protein coding region.
B
You might also like to view...
Due to the lack of an enzyme to break down lipids, excess accumulation of lipids in the brain leads to a human disease called Tay Sachs syndrome. Which organelle is likely to be the one that lacks the proper enzyme needed for lipid breakdown?
A. lysosome B. tonoplast C. mitochondrion D. Golgi apparatus E. peroxisome
In the second phase of photosynthesis, chemical energy + __________ = sugar
a. carbon dioxide b. nitrogen c. oxygen d. water
Which ion is pumped out of guard cells in order to increase their turgidity?
a. H+ b. Ca2+ c. Na+ d. K+
If a mutation prevents the formation of the antiterminator 2+3 loop in the trp operon, what would be the effect?
A. no effect, as 2+3 loop has no function B. transcription only when tryptophan is absent C. transcription only when tryptophan is present D. constitutive attenuation of transcription E. constitutive transcription