Get Guided BIOS 390 Week 2 Quiz Study Guide Summer 2018
Question Set 1
- (TCO 3) DNA replication is said to be semiconservative because
- (TCO 3) DNA synthesis
Get Guided BIOS 390 Week 2 Quiz Study Guide Summer 2018
Question Set 1
- (TCO 3) DNA replication is said to be semiconservative because
- (TCO 3) DNA synthesis occurs in
- (TCO 3) Which of the following statements is correct?
Question Set 2
- (TCO 3) During DNA replication, DNA ligase is most active on the lagging strand.
- This is because
- (TCO 3) Phosphodiester bonds are formed between adjacent Okazaki fragments by
- (TCO 3) Which of the following activities are unique for DNA polymerase I?
Question Set 3
- (TCO 3) Once bound to an origin of replication, the origin replication complex (ORC) recruits
- (TCO 3) Positive supercoils ahead of the replication fork are resolved by
Question Set 4
- (TCO 3) Replication licensing ensures that
- (TCO 3) Pre-replication complex assembly
- (TCO 3) Find the incorrect statement. (Describe the replication processes.)
Question Set 5
- (TCO 3) Nucleotide selectivity and proofreading by DNA polymerase depends on
- (TCO 3) Chromatin assembly factor 1 (CAF-1) is thought to aid replication by
- (TCO 3) Telomerase is a ribonucleoprotein complex. The RNA component of the complex
Question Set 6
- (TCO 4) A nonsense mutation is one in which
- (TCO 4) A silent mutation is one in which
- (TCO 4) A missense mutation is one in which
Question Set 7
- (TCO 4) Which statement is not true about the deamination of cytosine? (Describe the deamination of cytosine.)
- (TCO 4) The most frequent ultraviolet (UV) light-induced lesions of DNA are
Question Set 8
- (TCO 4) In human cells, pyrimidine dimers can be repaired by
- (TCO 4) In human DNA, replication errors are repaired by
- (TCO 4) In humans, double-strand DNA damage is repaired by Top of Form
Question Set 9
- (TCO 4) Translesion synthesis is mediated by
- (TCO 4) In the mismatch repair pathway, DNA damage is recognized by
- (TCO 4) Base excision repair is initiated by
Question Set 10
- (TCO 3) Outline the steps of nuclear chromosome replication in eukaryotes, starting from the origin firing and ending with telomere replication.
- (TCO 3) Define the term “replication licensing” and its importance in DNA replication. Explain how this is achieved in a cell.
- (TCO 3) Describe the “end replication problem.” Discuss the role of telomeres as a solution to the end replication problem and also in the aging of a cell.
Question Set 11
- (TCO 3) Why do humans need telomeres and bacteria don’t?
- (TCO 3) Describe an example of “polymerase switching.”
- (TCO 3) Why are RNA primers required during DNA replication?
Question Set 12
- (TCO 3) Compare and contrast the three major classes of DNA damage.
- (TCO 3) Describe the process of translesion synthesis and explain why it is not truly a repair system.
- (TCO 3) What two enzymes catalyze direct reversal of DNA damage? Briefly explain the mechanisms they use. Are both repair pathways present in human cells?
Question Set 13
- (TCO 4) Give an example of a single base change and suggest how that change, if not repaired, will be detrimental to the host.
- (TCO 4) Of the three classes of DNA damage, which is the most detrimental, and why?
- (TCO 4) How can a point mutation have a range of effects—from … undetected to very fatal
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