MMSC 490 Final (A+ Graded Already)

Which energy-producing process is thought to have come first during cellular evolution? correct answers Glycolysis The initial importance of a membrane enclosing self-replicating RNA molecules and associated proteins was that it correct answers maintained these molecules as a unit capable of reproduction and evolution. Mitochondria and chloroplasts resemble bacteria in that they correct answers have their own DNA, have their own ribosomes, reproduce by simple division into two. Which of the following is a colonial organism closely related to the evolutionary precursors of present-day plants? correct answers Volvox The simplicity and clarity of Caenorhabditis elegans allowed researchers to correct answers trace the developmental lineages of all cells in the adult. 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 Which of the following is not a unicellular eukaryote? correct answers Archaebacteria The growth factor that stimulates fibroblasts to divide around a wound is released by correct answers platelets. In polysaccharides, sugars are linked together by means of .......... bonds correct answers glycosidic Which of the following is not a basic amino acid? correct answers Glutamine In the primary structure of a protein, amino acids are joined together by .......... bonds. correct answers peptide What is the major carbohydrate-storage molecule in plants? correct answers Starch Cholesterol affects the fluidity of membranes by correct answers decreasing membrane fluidity at high temperatures and increasing membrane fluidity at low temperatures Cholesterol, a membrane lipid in animals, has a chemical structure similar to correct answers estradiol. Our fundamental knowledge about mutation, genetic linkage, and the relationships between genes and chromosomes was acquired largely from experiments on the correct answers fruit fly Drosophila.