LECTURE 1 AND 2 BIOC20 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++

LECTURE 1 AND 2 BIOC20 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ What does a nucleotide consist of? Base, phosphate, and sugar templated polymerization Replication of a strand using a template strand. Add nucleotides one by one. Enzyme that makes RNA transcript RNA polymerase 2 Differences between DNA and RNA Sugar= ribose and deoxyribose Uracil and thymine ribonucleotides and deoxyribonucleotides Use cake analogy for Replication and Protein synthesis Recipe book is entirely copied. Choose a cake recipe and create a cue card with the recipe(mRNA). Gather all ingredients(AA) and put them in order. Create the cake(protein) Virion? What is another name for virion? A complete, infectious virus particle. Virus particle. What are the 2 forms of a virions? Icosahedral and cylindrical. In icosahedral, the genome is inside surrounded by a capsid protein and sometimes a lipid envelope. The Why can't a virus go and infect when compared to a virion? Virus is just the genome that cannot go out of the cell. The virion is packaged to go out and infect other cells. Can cylindrical viruses have envelopes like icosahedral can? Do all viruses need to have envelopes? Yes, cylindrical can have envelopes. All viruses do not need to have envelopes. Helical virus The genome is connected tot he capsid proteins going around the cylinder shape. What is meant when viruses are called obligatory intracellular parasites? They take advantage/resources from other organisms(resources) and enter a cell(intracellular). Why are viruses dependent on living cells for their replication? 1.Lack of macromolecules(amino acids, nucleic acids) 2.Lack of enzymes(RNA polymerases)