is DNA replication called semiconservative?   A. Both daughter strands are entirely new B. Each daughter duplex contains one strand from the parent structure and one new strand C. Each daughter duplex will contain parts of the parental strand in each strand. D. None of these is the

Cancer cells can divide much longer than most other cells. One possible reason is the presence of telomerase in cancer cells. How might telomerase aid cancer cells? A. It proofreads the telomere sequences. B. It increases the length of the telomeres. C. It decreases the length of the telomeres. D. It stabilizes the bonds in the telomeres.

Give only typing answer with explanation and conclusion You are studying a strain of bacteria that carries a temperature-sensitive mutation in one of the genes required for DNA replication. The bacteria grow normally at the lower temperature, but when the temperature is raised they die. When you analyze the remains of the bacterial cells grown at the higher temperature you find evidence of partly replicated DNA. When the strands of this DNA are separated by heating, numerous single-stranded DNA molecules around 1000 nucleotides long are found. Which of the proteins listed below are most likely to be impaired in these mutant bacteria and why?: Primase, Helicase, or DNA Polymerase?

What will most likely be the effect of the change in the DNA molecule? *   A. the change will cause a harmful mutation   B. the DNA molecule will be unable to replicate   C. the organism will be reproduce   D. the DNA molecules will code for a different protein Original strand: T A C G T A T G A A G C, Mutant strand: T A G C T A T G A A G C. what type of mutation? *   A. Substitution   B. Deletion   C. Insertion   D. Nonsense Which mechanism contributes to accuracy during DNA Replication? *   A. The mismatch repair system recognizes an incorrect base-pair and corrects the mistake in the non-methylated strand   B. Using primers increase accuracy because the first nucleotides is a new nucleic acid chain are more like to be correct.   C. all DNA polymerase have a 5'-3' exonuclease activity which can remove…

Why is DNA replication considered semiconservative?   a. One molecule consists of the old strands and the other DNA molecule is entirely new.   b.Both strands of each replicating DNA molecule are new.   c. One strand of each replicating DNA molecule is conserved and the other strand is newly synthesized.   d.Both strands of each replicating DNA molecules are conserved.

Can you explain it?

You are studying bacterial cells and you find bacteria with a mutation that causes it to produce non-functional ligase. If you allowed that cell to replicate once and then you isolated the DNA from the two newly formed cells what would you expect to find? A. One longer single strand of DNA and many short single strands of DNA B. Two longer single strands of DNA and many short single strands of DNA C. Four longer single strands of DNA and many short single strands of DNA D. Eight longer single strands of DNA and many short single strands of DNA Choose the correct answer above and explain why you chose that answer. Your explanation should discuss the replication of DNA in bacteria and the role of ligase in DNA replication.

The leading strand in DNA replication requires only one primer for its synthesis. The lagging strand requires several primers because a. the lagging strand is prepared in short segments b. the lagging strand lacks a topoisomerase c. the leading strand serves as a template for the lagging strand d. All DNA polymerases read from the 5′ end.

Semiconservative replication of DNA means that:   a. both daughter duplexes will be entirely new and the parental duplex will be degraded   b. each daughter duplex will have one of the original parental strands and one new strand   c. each strand of the daughter duplexes will have parts of the parental strand and parts of the new strand   d. one daughter duplex will be entirely new and the other will have both original parental strands

Which statement regarding DNA replication is false?   A. On a DNA strand that is being synthesized, the 3' end is growing B. On a DNA strand that is being synthesized, the 5' end is growing C. On a DNA strand that is being synthesized, both 3' and 5' ends are  growing D. All of the above  E. None of the above