THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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two copies
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multiple copies
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an identical copy
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different copies
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Detailed explanation-1: -Specifically, gene expression is controlled on two levels. First, transcription is controlled by limiting the amount of mRNA that is produced from a particular gene. The second level of control is through post-transcriptional events that regulate the translation of mRNA into proteins.
Detailed explanation-2: -Gene expression is primarily controlled at the level of transcription, largely as a result of binding of proteins to specific sites on DNA.
Detailed explanation-3: -This is carried out by an enzyme? called RNA polymerase which uses available bases from the nucleus? of the cell to form the mRNA.
Detailed explanation-4: -The cell types in a multicellular organism become different from one another because they synthesize and accumulate different sets of RNA and protein molecules. They generally do this without altering the sequence of their DNA.