Podcast
Questions and Answers
Why did Meselson and Stahl label the DNA strands with a heavy isotope of nitrogen (15N)?
Why did Meselson and Stahl label the DNA strands with a heavy isotope of nitrogen (15N)?
- To support the semiconservative model (correct)
- To study the function of Telomerase
- To prevent DNA replication
- To understand the process of chromatin disassembly
How did Meselson and Stahl's experiments support the semiconservative model of DNA replication?
How did Meselson and Stahl's experiments support the semiconservative model of DNA replication?
- By producing DNA with only 14N in both rounds of replication
- By producing only heavy isotope-labeled DNA strands
- By showing that DNA replication proceeds in one direction only
- By eliminating the dispersive and conservative models (correct)
What is the role of origins of replication in DNA replication?
What is the role of origins of replication in DNA replication?
- They prevent DNA elongation
- They assist in the reassembly of histones
- They bind to histones to facilitate replication
- They separate the two DNA strands (correct)
In eukaryotes, why are there hundreds or thousands of origins of replication on a single chromosome?
In eukaryotes, why are there hundreds or thousands of origins of replication on a single chromosome?
Why is it essential for histones to be disassembled and reassembled during DNA replication in eukaryotes?
Why is it essential for histones to be disassembled and reassembled during DNA replication in eukaryotes?
What is the function of topoisomerases like gyrase in DNA replication?
What is the function of topoisomerases like gyrase in DNA replication?
What is the function of telomeres in eukaryotic chromosomes?
What is the function of telomeres in eukaryotic chromosomes?
Why is the shortening of telomeres hypothesized to be the cellular basis for aging?
Why is the shortening of telomeres hypothesized to be the cellular basis for aging?
Which enzyme is responsible for catalyzing the lengthening of telomeres in germline cells?
Which enzyme is responsible for catalyzing the lengthening of telomeres in germline cells?
What is the purpose of circular chromosomes in prokaryotes?
What is the purpose of circular chromosomes in prokaryotes?
How do telomeres differ from other parts of the chromosome?
How do telomeres differ from other parts of the chromosome?
What role does telomerase play in protecting organisms according to the text?
What role does telomerase play in protecting organisms according to the text?
What is the main function of DNA polymerase in DNA replication?
What is the main function of DNA polymerase in DNA replication?
Which enzyme is responsible for sealing Okazaki fragments together in DNA replication?
Which enzyme is responsible for sealing Okazaki fragments together in DNA replication?
Why does repeated replication of linear eukaryotic chromosomes produce shorter DNA molecules with uneven ends?
Why does repeated replication of linear eukaryotic chromosomes produce shorter DNA molecules with uneven ends?
What is the term used to describe the complex that includes all components needed for DNA replication?
What is the term used to describe the complex that includes all components needed for DNA replication?
Which model describes the lagging strand of DNA folding into a loop during replication?
Which model describes the lagging strand of DNA folding into a loop during replication?
In which type of chromosomes does the usual replication machinery provide no way to complete the 5' ends?
In which type of chromosomes does the usual replication machinery provide no way to complete the 5' ends?
Flashcards are hidden until you start studying
