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DNA Pre/post Test key with citations (if no citation, source is either from old textbook generators or made by the master teacher) Name ________________________________________ September 29, 2012 SC.912.L.16.3 Describe the basic process of DNA replication and how it relates to the transmission and conservation of the genetic information. SC.912.L.16.10 Evaluate the impact of biotechnology on the individual, society and the environment, including medical and ethical issues. SC.912.L.16.4 Explain how mutations in the DNA sequence may or may not result in phenotypic change. Explain how mutations in gametes may result in phenotypic changes in offspring. SC.912.L.16.9 Explain how and why the genetic code is universal and is common to almost all organisms 1. Figure 8.1 shows a single strand of DNA. Choose the first three nucleotides of the other DNA strand. A. GGT B. CCT C. GGC D. TTA McDougal Biology Florida 2012 2. The main difference between the four nucleotides that make up DNA is that they have different A. sugars. B. uracil. C. bonds. D. bases. McDougal Biology Florida 2012 3. In humans, where does DNA replication take place? A. Cytoplasm B. Ribosome C. Nucleus D. Vacuole Also assesses SC.912.L.14.3 McDougal Biology Florida 2012 4. Four different segments of a DNA molecule are represented below. There is an error in the DNA in which molecule? A. segment 1 only B. segment 3 only C. segment 2 and 3 D. segment 2 and 4 http://ecsd-fl.schoolloop.com/BiologyEOCReview 5. How many amino acids are coded for by the strand of mRNA shown below? Assume the reading frame begins with the first nucleotide. CGAUAC A. 1 B. 2 C. 3 D. 6 McDougal Biology Florida 2012 6. Which choice describes DNA after replication has taken place? A. one molecule with two original strands and one molecule with two new strands B. two molecules, each with one original and one new strand C. two molecules, each with two new strands D. two molecules, each with two old strands http://ecsd-fl.schoolloop.com/BiologyEOCReview 7. What does DNA polymerase do during replication? A. binds nucleotides together and corrects base pair errors B. transmits messages that are translated into proteins C. attracts amino acids to the ribosomes for assembly D. recognizes and points out new origins of replication Also assesses: SC.912.L.18.1 .SC.912.L.18.4 McDougal Biology Florida 2012 8. When does replication occur? A once in every cell cycle B. when nucleotides float in the nucleus C. during the cell's M phase D. when tRNA unzips DNA Also assesses SC.912.L.16.8 & SC.912.L.16.14 McDougal Biology Florida 2012 9. Genes for medically important proteins can be cloned and inserted into bacteria, as shown in the diagram below. Why can bacteria recognize a human gene and then produce a human protein? A. DNA replication in bacteria and humans is the same. B. Bacterial cells contain the same organelles as human cells. C. The basic components of DNA are the same in humans and bacteria. D. Bacterial cells and human cells contain the same kind of chromosomes http://ecsd-fl.schoolloop.com/BiologyEOCReview 10. While genetic engineering has positive benefits, there are also concerns associated with widespread use of genetic engineering in agriculture. If many farmers begin to plant more genetically modified crops that have an increased tolerance to insects, which of the following may result? A. an increase in the use of pesticides B. a decrease in genetic diversity of the crops C. an increase in the contamination of the water supply D. a decrease in crop productivity on these treated fields DOE item specs pdf