GENETICS AND EVOLUTION
MOLECULAR BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a cell surface protein that requires transport from the ER
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an mRNA that has been translated
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a promoter that usually acts in S phase, now that the cell is in G2
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a regulatory protein that requires sugar residues to be attached
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Detailed explanation-1: -A ribosome converts mRNA into a protein. A ribosome is an organelle that is found within the cell of an organism. The job of this organelle is to take the mRNA, or the code that comes from the transcription phase (i.e., the process of copying DNA), and form a peptide chain according to what the code describes.
Detailed explanation-2: -Which of the following statements describes one of the functions of the protein called ubiquitin? It attaches to proteins that are marked for destruction in the cell.
Detailed explanation-3: -The pre-mRNA has to go through some modifications to become a mature mRNA molecule that can leave the nucleus and be translated. These include splicing, capping, and addition of a poly-A tail, all of which can potentially be regulated – sped up, slowed down, or altered to result in a different product.
Detailed explanation-4: -Which of the following can be translated into protein? mRNA, tRNA, and rRNA are all translated into protein.