NURS 223 FINAL EXAM TEST BANK(INCLUSIVE OF ALL THE 10 TOPICS) RATED A WITH RATIONALES

URS 223 FINAL EXAM TEST BANK(INCLUSIVE OF ALL THE 10 TOPICS) RATED A WITH RATIONALES 1. The student nurse learning about cellular regulation understands that which process occurs during the S phase of the cell cycle? a. Actual division (mitosis) b. Doubling of DNA c. Growing extra membrane d. No reproductive activity ANS: B During the S phase, the cell must double its DNA content through DNA synthesis. Actual division, or mitosis, occurs during the M phase. Growing extra membrane occurs in the G1 phase. During the G0 phase, the cell is working but is not involved in any reproductive activity. 2. A student nurse asks the nursing instructor what “apoptosis” means. What response by the instructor is best? a. Growth by cells enlarging b. Having the normal number of chromosomes c. Inhibition of cell growth d. Programmed cell death ANS: D Apoptosis is programmed cell death. With this characteristic, organs and tissues function with cells that are at their peak of performance. Growth by cells enlarging is hyperplasia. Having the normal number of chromosomes is euploidy. Inhibition of cell growth is contact inhibition. 3. The nursing instructor explains the difference between normal cells and benign tumor cells. What information does the instructor provide about these cells? a. Benign tumors grow through invasion of other tissue. b. Benign tumors have lost their cellular regulation from contact inhibition. c. Growing in the wrong place or time is typical of benign tumors. d. The loss of characteristics of the parent cells is called anaplasia. ANS: C Benign tumors are basically normal cells growing in the wrong place or at the wrong time. Benign cells grow through hyperplasia, not invasion. Benign tumor cells retain contact inhibition. Anaplasia is a characteristic of cancer cells. 4. A group of nursing students has entered a futuristic science contest in which they have “developed” a cure for cancer. Which treatment would most likely be the winning entry? a. Artificial fibronectin infusion to maintain tight adhesion of cells b. Chromosome repair kit to halt rapid division of cancer cells c. Synthetic enzyme transfusion to allow rapid cellular migration d. Telomerase therapy to maintain chromosomal immortality ANS: A Cancer cells do not have sufficient fibronectin and so do not maintain tight adhesion with other cells. This is part of the mechanism of metastasis. Chromosome alterations in cancer cells (aneuploidy) consist of having too many, too few, or altered chromosome pairs. This does not