1408 Study GuideExam 4 - 1408 Study Guide Exam 4 1 Define...

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1408 Study Guide Exam 4 1. Define DNA replication, RNA transcription, protein translation. What is the origin of replication? 2. When the ribosome reaches a stop codon on the mRNA, no corresponding tRNA enters the A site. When this happens, are the two ribosome subunits still attached to the mRNA? What happens to the polypeptide? 3. List the ways DNA differs from RNA. 4. If you are given the DNA sequence AATCTAGGCT, what is the complementary DNA strand? What is the corresponding RNA strand? 5. If there are 50 chromatids in an autosomal cell, how many centromeres are there? 6. Think about the total amount of DNA in a cell. Compare the amounts of DNA just before the S phase and just after S phase. 7. If a cell divides one, there will be two cells. If those cells divide again, there will be 4 cells. If those cells divide again, there will be 8 cells. Start with one cell. How many cells will there be after 1 division? 2 2 divisions? 4 3 divisions? 6 4 divisions? 8 5 divisions? 10 6 divisions? 12 7 divisions? 14 8. What is meant by semi-conservative DNA replication? The two strands of DNA that were separated remain and are used to form the new strand of DNA. (half and half) 9. What are introns?
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