Mmsc490 Final Exam (Correctly Solved!)

The diffraction limited resolving power of a standard light microscope is approximately? correct answers 0.2 micro meter Studies on which model experimental organism led to the initial discovery of important mechanisms controlling the development of the animal body plan? correct answers Drosophila melanogaster Because the genetic code usually has more than one codon for each amino acid, the code is said to be correct answers degenerate Vectors for expressing a eukaryotic protein in a bacterium must contain which of the following? correct answers origin of replication What is the term used in cell biology to describe the transmission of information from the environment, such as the presence of a hormone, to targets within the cell? correct answers signaling pathway In RNA interference experiments, siRNAs homologous to known mRNAs inhibit expression of the proteins by what mechanism? correct answers They form double-stranded RNA molecules that get degraded in the cytoplasm. In 2010, scientists developed a series of overlapping oligonucleotides that extended a full 1.08 million base pairs and used it to develop the first complete organism using a synthetic genome. The newly created cells had normal growth and morphology. correct answers The tetracycline resistance gene allows the selection of only the cells that are resistant to tetracycline and thus cells that survive selection carry the novel synthetic genome. Self-splicing was discovered in studies of the correct answers pre-rRNA of Tetrahymena Stretches of sequenced nucleotides that code for polypeptides are recognized by the correct answers absence of open-reading frames