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- How does the process of cell division contribute to transmission of genetic materials from one generation to the next?6) What phase of the cell cycle would be altered, and what would change if you treated a cancer cell with a drug that a) interfered with DNA replication. b) stopped the spindle fibers from elongating.You add a chemical to five samples of cells and have another five samples of cells to which you do not add the chemical. You wait 10 minutes and then stain all ten samples of cells and observe if they have entered mitosis or not? What is the dependent variable? Group of answer choices A) If the cells entered mitosis or not B) The number of samples of the cells C) The length of time before stainingg D) If the cells are treated with the chemical or not
- 3) Examine the graph showing the relative percentage normal and cancer cells spend in various stages of the cell cycle. Based on the information in the graphs, infer how cancer cells differ from typical, noncancerous cells. Select ALL that apply. A) Cancer cells do not replicate their DNA. B) Cancer cells replicate their DNA too quickly. C) Cancer cells do not go through interphase during their cell cycle. D) Cancer cells spend more time dividing compared to typical cells. E) Cancer cells do not always grow to the same size as typical cells. more than 1 answer. not gradedNeed help If the mitotic spindle does not correctly attach to chromosome kinetochores, the spindle assembly checkpoint will be activated. Select all correct outcomes for chromosomes not correctly attached to mitotic spindle A) centrosome duplication will not occur B) M cyclin will be degraded C) APC will be inhibited D) chromosomes will not segregate E) Mad2 will bind to unattached kinetochores F) mitosis will halt at metaphase/anaphase transitionWhat happens when UV light is shown on DNA? How is this dealt with by the cell?
- What is the fundamental molecular difference that distinguishes a stem cell?What happens to a cell with damaged DNA? a) The cell is destroyed. b) It leaves the cell cycle to join all the other damaged cells. c) Nothing. Cells can’t tell the difference. d) A nurse cell helps to repair the cell.How does DNA replication occur in a precise manner to ensure that identical genetic information is put into the new chromatid? See Figures 8.12 and 8.13. FIGURE 8.12 In DNA replication, the two polynucleotide strands uncoil, and each is a template for synthesizing a new strand. A replicated DNA molecule contains one new strand and one old strand. This mechanism is called semiconservative replication. FIGURE 8.13 A close-up look at the process of DNA replication. (a) As the strands uncoil, bases are added to the newly synthesized strand by complementary base pairing with bases in the template strand. The new bases are linked together by DNA polymerase. (b) DNA synthesis can proceed only in the 5 3 direction; newly synthesized DNA on one template strand is made in short segments and linked together by the enzyme DNA ligase.
- 28. When studying living cells in a laboratory, rescarchers sometimes use drugs as a way to make cells remain at a particular stage of the cell cycle A drug that inhibits cytokinesis would leave cells arrested at which phase in the cell cycle? A) Interphase B) Telophase C) Anaphase D) Prophase E) Metaphase 29. An epigenetics modification is where: A) The DNA sequence of a gene is changed, altering gene expression B) A chemical modification (ie methylation) of DNA occurs that alters gene expression C) Gene expression is permanently changed over the course of many generations D) Both A and C E) Both B and C 30. A very rare dominant allele that causes the little finger to be bent has a penetrance value of 80% This means that? A) 80% of the total population does not have a bent little figure B) 80% of all heterozygotes carrying the allele will have a bent little finger C) 80% of the total population carries the allede for bent little finger D) 80% of all homozygous individuals carrying the…Which of the following best describes the difference between interphase and mitosis? a) During interphase, DNA has a loose structure that condenses during mitosis. b) During interphase, histones help compact DNA into chromosomes. And once mitosis starts, histones are destroyed. c) During interphase, DNA is tightly packed into chromosomes that uncoil once mitosis starts. d) During interphase, DNA is packed as chromosomes. And during mitosis, DNA is called chromatin. Please I need a surely answer and a quicker responseHow long does it take for a cell to take one complete cycle? The answer varies on the type of cell and the species. For instance, a liver cell completes its cell cycle for over 22 hours (Becker and Lane 1965) while other somatic cell lasts to about 18 hours. Can you cite other types of cells that undergo cell cycle and the time it takes to complete the cycle? List five below.