1.2 A colony of bacterial cells is exposed to UV-light. 1.2.1 What mutation will probably result from the exposure? (1) 1.2.2 Which repair mechanisms can be used by the cell to repair the mutation? (2)
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1.2 A colony of bacterial cells is exposed to UV-light.
1.2.1 What mutation will probably result from the exposure? (1)
1.2.2 Which repair mechanisms can be used by the cell to repair the mutation? (2)
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- 4:17 Regarding chronic disease prevention, match each term with the phrase that best describes it Molecule produced by innate immune cells. that is involved in maintaining chronic inflammation A protein produced by the liver that is al frequently used marker of chronic inflammation The degree to which a certain food elevates blood glucose after it's eaten A small molecule that can bind to histones and DNA, frequently with the result of gene silencing An enzyme that rebuilds the end caps of chromosomes after each cell division, thus prolonging the life of the cell [Choose] [Choose] Interleukin-6 TNF-alpha Methyl Tag Glycemic Load C Reactive Protein Glycemic Index Telomerase [Choose] [Choose ] [Choose] XWhat is the consequence of mutation of a mismatch repair enzyme? How will this affect the function of a gene?You treat some cancer cells with a new therapeutic that you hope will kill them. You run an MTT assay on the results and notice that the sample from the control cells (not treated with drug) turns purple upon addition of the MTT and the sample from the cells treated your drug are clear after adding MTT. As you walk down the hall to run your sample on the spectrophotometer, how are you feeling? (a) frustrated, (b) unsure, (c) excited. I understand that if the cell are alive, they will have functioning mitochondria, the mitochondria will be producing NADH and NADPH which will allow some enzymes in the cell to convert empty T which is colorless, into a colored form as and die. The colorelss means less dye with present, which means the less empty T was converted, meaning that we had less mitochondrial activity, which means we had less live cells. I think that the answer should be (a) frustrated. I am not sure if I am right. Glad if the expert advise.
- 43. The drug vincristine, which prevents polymerization of tubulin, is used as a chemotherapeutic agent for a number of cancers. Its main mechanism of action in this context would be _______________in the cancer cells. a) blocking cell division by interfering with mitotic spindle formation b) disruption of cell shape or polarity c) disrupting cell function via abnormal localization of organelles d) a and c e) a, b and cOne important biological effect of a large dose of ionizing radiation is to halt cell division. What might be the effects of such a mutation if the cell is not irradiated?100. Hemocytes are stem cells which become plasma cells of the White Blood Cell System. These cells produce a type of proteins called antibodies. These antibodies attack viruses and bacteria. Such cell products are: a) synthesized by the ribosomes, b) synthesized into the endoplasmic reticulum, c) transported by vesicles into the Golgi apparatus, d) released by the Golgi apparatus into the blood by exocytosis e) all of these steps occur.
- Why is it essential for a cell to repair mutations in its DNA? What happens to the cell if the mutations are too severe?I read that vinyl chloride exposure is associated with an increased risk of a rare form of liver cancer (hepatic angiosarcoma), as well as brain and lung cancers, lymphoma, and leukemia. But my question is what gene(s) are being mutated by this type of taxic gas?Part A and B A. What is the normal function of the Rb protein? A) Rb prevents the cell cycle from proceeding unless the cell is prepared to do so B) Rb causes cells to undergo apoptosis C) Rb promotes Cdk activation D) Each of the other selections is true E) Rb repairs damaged DNA B. How do tumors arise? A) When cell proliferation occurs at a higher rate than cell death B) When someone is infected with a tumor from another person C) When cell death occurs at a very high rate D) When cell proliferation occurs at a very low rate
- 1) Given the image below, describe what is happening at each of the 3 sections (i.e. 1, 2, and 3) . [In section 1, the gene donor is providing..., In section 2..., In section 3...]64. Embryonic stem (ES) cells differ from somatic stem cells in that ... a) ES cells can only be derived from early embryos, whereas somatic stem cells are present in adult tissues. b) ES cells retain the ability to renew themselves, whereas somatic stem cells do not. c) ES cells are pluripotent and can differentiate into any cell type in the developing embryo, whereas somatic stem cells are considered multipotent in that they produce a more limited number of differentiated cell types. d) a and c e) a, b and cWhat separates cancer cells from normal cells? Describe one form of mutation that can increase the risk of a normal cell being cancerous.
