These questions were assembled from a variety of sources over the past 3 years. While it is not possible to thank everyone I would like to acknowledge the TAs and the study leaders for residence students. Some questions are simple but all are meant to help your organize your studying NOT to provide answers. Study in a group to test each other. For T,F or multiple choice questions or short answer questions: once you have answered, provide a short explanation of your reasoning.
What are the main differences between DNA and RNA? The fact that some viruses use DNA to direct their heredity was demonstrated by: a. Finding radioactive sulfur from a bacteriophage in a bacterium b. Finding radioactive phosphorus from a bacterium in a bacteriophage c. Finding that radioactive phosphorus from a bacteriophage had mutated in bacterium d. Finding radioactive phosphorus from a bacteriophage in a bacterium e. Finding radioactive sulfur from a bacterium in a bacteriophage The identification of the transforming principle proved that: a. Dead bacteria are as lethal as live ones . Streptococcus pneumonia evolved from Pneumococcus c. Genetic information is contained in DNA d. There is no protein in chromosomes e. Genetic information was transmitted by a polysaccharide True/False questions: 1. A DNA molecule has the same amount of adenine and thymine. 2. The process of acquiring a gene from another organism is called transformation. 3. The Hershey-Chase experiment showed that the virus protein is responsible for directing the production of new viruses. 4. The two sides of the double helix structure of DNA are held together by hydrogen bonds. 5.
Student Exploration: DNA Fingerprint Analysis Vocabulary: codon, DNA, DNA fingerprint, genotype, identical twins, nitrogenous base, phenotype, trait Prior Knowledge Questions (Do these BEFORE using the Gizmo. ) 1. The two navy officers shown at left are identical twins. Why do you think identical twins look so similar? Identical twins look so similar because identical twins have the same genetic ...
DNA replication is called semiconservative because half of each of the two new strands of DNA is “old” DNA from the original DNA molecule and half is the “new” DNA. Unit 1-2: Chromatin the Dynamic Structure Describe the bacterial chromosome. Describe the eukaryotic chromosome. How are the different/ similar? Where is chromatin found? What does it form during nuclear division? What does “chromatin remodelling” do? What is the “Histone Code”? What is the difference between euchromatin and heterochromatin? Unit 2: Information flow Replication What are the basic enzymes involved in DNA replication and what does each one do?
Which of the following statements is true regarding introns? a. Introns are the parts of mRNA that are translated b. Introns have no function c. In general, human genes have fewer introns than genes of other organisms d. Introns may be involved in exon shuffling A geneticist isolates a gene for a specific trait under study. She also isolates the corresponding mRNA. Upon comparison, the mRNA is found to contain 1,000 fewer bases than the DNA sequence. Did the geneticist isolate the wrong DNA? a. yes, mRNA is made from a DNA template and should be the same length as the gene sequence b. es, the mRNA should contain more bases than the DNA sequence because bases flanking the gene are also transcribed c. no, the final mRNA contains only exons, the introns were removed d. no, the mRNA was partially degraded after it was transcribed Unit 2: Information flow Translation What is the three letter code called in DNA? What about in RNA? If it is 5’GAC3’ in DNA, what will the RNA version be? What about 5’GTC3’? What about the tRNA? What are the 3 types of codons? What are their functions? Describe the stages in translation Explain the concept of redundancy. What is codon bias?