One way of regulating eukaryotic gene expression is to control the life time of the messenger RNA. mRNA degradation occurs by different mechanisms. Briefly describe the miRNA (microRNA) pathway that leads to mRNA degradation.
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1. Which cellular processes occur as a consequence of differential control of gene expression in eukaryotic cells?
| a) Cell Differentiation | ||||||||||||||||||||||||||||||||
| b) Differential Translation | ||||||||||||||||||||||||||||||||
| c) Differential Polymerization | ||||||||||||||||||||||||||||||||
| d) Differential DNA Replication | ||||||||||||||||||||||||||||||||
| e) Differential tRNA Degradation 2) Multicellular organisms are comprised of a variety of cells with different morphologies and different functions. Which is the underlying mechanism that leads to the generation of diverse cell in one organism?
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4) Which effect has the binding of the ligand to a G-protein coupled receptor on intracellular G-protein?
| a) | ATP is hydrolyzed, activating phosphorylation | |
| b) | GTP is exchanged for GDP on the G protein, inactivating the G protein | |
| c) | GDP is exchanged for GTP on the G protein, activating the G protein | |
| d) | GMP is released from the G-protein, inactivating the receptor | |
| e) | None of the above |
