Practice Test 4 Answers

Practice Test 4 Answers - PRACTICE QUESTIONS FOR EXAM 4 1....

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PRACTICE QUESTIONS FOR EXAM 4 1. DNA replication is more difficult to study in eukaryotes because: A) the association of the DNA with the nuclear matrix makes it more difficult to reconstitute the process in the test tube. B) extraction of eukaryotic chromosomes causes the chromosomes to clump together (due to hydrophobic interactions between the DNA helices, making it impossible to study DNA synthesis. C) in eukaryotes the organization of DNA into chromosomes and the organization of the chromosomes by the nuclear lamina makes it very difficult to reconstitute the process in the test D) A and C are correct E) A, B and C are correct 2. The statement that DNA synthesis is semi-conservative indicates that: A) The DNA polymerase can copy the template strand in either the 5' to 3' direction or in the 3' to 5' direction. B) both parental strands of DNA are inherited by one daughter cell and the newly synthesized strands of DNA are inherited by the other daughter cell. C) the two strands of DNA are separated at the origin of replication, forming two replicating forks which are unwound from the origin of replication in opposite directions. D) the leading strand is synthesized in the 5' to 3' direction and the lagging strand is synthesized in the 3' to 5' direction E) each daughter cell inherits one strand of parental DNA and one strand of newly synthesized DNA 3. During initiation of DNA replication in prokaryotes, approximately how many DnaA.ATP molecules bind at the Ori C locus A) two, one per replicating fork B) four, two per replicating fork C) twenty per origin D) forty, twenty per DNA strand E) as many as are need to keep the DNA single stranded 4. The problem of replicating the 5'- 3' DNA template by: A) base pairing B) replicating forks C) unwinding the DNA in both directions D) discontinuous synthesis E) synthesizing the new DNA in the 3' to 5' direction
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Refer to the following list of enzymes/proteins to answer the following questions. The
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This homework help was uploaded on 04/17/2008 for the course BIOS 10161 taught by Professor Tenniswood during the Fall '07 term at Notre Dame.

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Practice Test 4 Answers - PRACTICE QUESTIONS FOR EXAM 4 1....

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