What process is performed by both algae and plants?
What will be an ideal response?
photosynthesis
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With regard to RNA polymerase proofreading ability, which of the following is correct?
A) It is a very stringent activity, no tolerance for mistakes. B) It is similar to that of DNA polymerases. C) There are specialized mRNA repair pathways that fix errors. D) There is absolutely no proofreading that needs to be done. E) The 3' ? 5' exonuclease activity is sufficient
What phase does it occur when the homologue pairs of chromosomes sign up at equator?
What will be an ideal response?
In an individual pea plant, the visible characteristics of yellow and wrinkled seeds are the plant's ________
Fill in the blank with correct word.
It is possible for a repressor to negatively regulate the expression of an operon because:
A. the repressor-binding site on the DNA overlaps with the translation start site, thereby preventing the transcription. B. the repressor physically blocks where the activator should be binding on the operator region. C. one of the structural genes expressed in the operon negatively regulates the repressor. D. the repressor-binding site overlaps the promoter site of the operon, allowing it to physically block the binding of RNA polymerase. E. the repressor induces the expression of the inducer by binding to the promoter that comes before the inducer gene.