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Unformatted text preview: Your Results for "Animations Quiz: DNA" Print this page Student results on this activity were sent to the Grade Tracker. Note that it may take a few moments for the score to appear. Go to Grade Tracker . Summary of Results for Angela Boulinger Site Title: Krogh, Biology: A Guide to the Natural World, 4e Book Title: Biology: A Guide to the Natural World Book Author: Krogh Location on Site: 13. Passing on Life's Information: DNA Structure, and Replication > Student Home > Animations Quiz: DNA Submitted: September 14, 2010 at 3:18 PM (EDT) 33% Correct of 12 questions 4 correct: 33% 8 incorrect: 67% More information about scoring 1. According to Chargaff's rule, which of the following base-pairings is correct? Your Answer: adenine --thymine Correct. A and T normally pair. 2. Which of the following is not part of the nucleotide structure that makes up the DNA molecule? Your Answer: a nitrogenous base Correct Answer: a carboxyl group Incorrect. A nitrogenous base is part of a nucleotide. 3. During DNA replication one template has the following base sequence AACTGGCTA, what would be the sequence on the complementary strand? Your Answer: GGACTTACG Correct Answer: TTGACCGAT Incorrect. The complementary strand needs to base pair with the template strand. 4. If you took a normal cell and replaced its thymine (T) with radioactive T and you allowed this cell to divide once, which of these results would you expect? Your Answer: the DNA in each of the daughter cells would be radioactive Correct. During semiconservative replication each original DNA strand will serve as a template to make a complementary new strand. 9/14/2010 13. Passing on Life's Information: DNA 1/4 5. What is the correct relationship among DNA, genes and chromosomes? Your Answer: A gene contains many chromosomes which are composed of proteins Correct Answer: A chromosome contains many genes which are composed of DNA Incorrect. Are chromosome made of proteins? 6. How do mutations affect an organism? Your Answer: they may cause the development of a disease-causing allele Correct Answer: all of the above Incorrect. Is this the only possible answer? 7. DNA replication occurs at an unbelievably fast rate. Once replication is complete, we can expect to find a _____ number of mistakes. Your Answer: large Correct Answer: small Incorrect. DNA polymerase makes few mistakes 8. A female that is planning to become pregnant is concerned about her exposure to environmental mutagens which may have caused DNA mutations. In order for these mutations to become heritable, they must affect the: Your Answer: her egg cells Correct. The gametes are passed to the next generation. 9. Which of the following would indicate a base pairing mutation in DNA?...
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