Question

For the next group of questions consider a diploid cell from a eukaryotic organism with a total of ten chromosomes. After one round of the cell cycle is complete you observe a total of four daughter cells. During this cell division occurred and the resulting daughter cells are. mitosis; haploid with ten total chromosomes each mitosis; diploid with five total chromosomes each meiosis; diploid with ten total chromosomes each meiosis; haploid with five total chromosomes each Before the cell divided, ft had to go through S phase. Which of the following occurred during S phase? A. MPF was present and in an active state. B. Prlmase added primers for both leading and lagging strand synthesis. C. Myosin and actin formed a contractile ring. D. Initiation of chromosome replication at a single origin of replication on each chromosome. In order for DNA replication to occur in the cell new helicase enzyme must be synthesized. What must have happened to the gene region that encodes helicase before the cell could start S phase? This region will become more condensed and the chromatin remodeling complex will bring nucleosomes closer together. RNA polymerase II bound to the template strand of the helicase gene after interacting with basal transcription factors. As soon as transcription of a RNA molecule occurs a ribosome will enter the nucleus and begins tosynthesis of a new helicase protein. Sigma will bind to the -10 box and -35 box upstream of the gene to promote recruitment of the transcriptional machinery. Which of the following will be present on the helicase protein in order to get it to the right part of the cell to carry out its function? ER signal sequence. Nuclear localization sequence. Ribosomal binding site. None of the above. All of the above. During DNA replication, DNA polymerase III inserted a non-complementary nucleotide. Which of the following could occur after this? Replication will proceed as usual because DNA polymerase is supposed to insert non-complementary nucleotides. DNA polymerase III temporarily stalls at that position and repairs the error. The error was not fixed and resulted in a frameshift mutation. Telomerase will fix the error using mismatch repair.

Answer 1

1. Answer - Option D - Meiosis; haploid with 5 chromosome each.

2. Answer - Option B - Primase adds primers to both leading and lagging strand.

3. Answer - Option B - RNA pol II bound to the template strand of the helicase gene after interacting with basal transcription factors.

4. Answer - Option B - Nuclear localization sequence - Helicase is required in nucleus for replication.

5. Answer - Option B - DNA pol III temporarily stalls at that position and repairs the error.