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Cell line is a general term that applies to a defined population of cells that can be maintained in culture for an extended period of time, retaining stability of certain phenotypes and functions. Cell lines are usually clonal, meaning that the entire population originated from a single common ancestor cell.
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- Which cell structure is present during plant cell division but not animal cell division? a. spindle. b. cell plate. c. cytokinesis. d. cleavage furrow. e. sister chromatids.Every cell is descended from another cell. This idea is part of ______. a. evolution c. the cell theory b. the theory of hereditary d. cell biologyThe cell membrane a) has no function that is known. b) is responsible for starting mitosis. c) controls what substances enter the cell. d) has a thick cuticle around the outside.
- ____ will hopefully prevent cells from going through their stages when there are problems with the cells. A) cytokinesis B) meiosis C) checkpoints D) mitosis promoting factor1. What is the purpose of preparing a cell culture?2. Differentiate the general types of cell culture.3. Enumerate and describe the role of the different components of a cell culture media.Which of the following is an example of cells undergoing mitosis and cytokinesis? A) dead skin cells being replaced B) a wound healing over a scar C) a tree producing new branches D) A new embryo growing E) All of the above
- Before a eukaryotic cell divides, ____ assemble, separate the cell’s duplicated DNA molecules, and then disassemble. a. flagella b. intermediate filaments c. microfilaments d. cilia e. microtubulesBiopsies from aggressive cancers often have cells that contain several nuclei per cell when viewed through a microscope. Which scenario could explain how such a multinucleated cell might have come to be? (a) The cell underwent repeated mitosis with simultaneous cytokinesis. (b) The cell had multiple S phases before it entered mitosis. (c) The cell underwent repeated mitosis, but cytokinesis did not occur. (d) The cell underwent repeated cytokinesis but no mitosis. (e) The cell actually went through meiosis and not mitosis.Which of the following is true of normal adult cells but NOT cancer cells? A. Cell death after a finite number of cell divisions B. Contact with other cells increases likelihood of division C. Large amount of telomerase present D. Do not care about cell density while culture
- Cytokinesis involves ... A.)division of the cytoplasm B.)a cleavage furrow (animals) or cell plate formation (plants) C.)the completion of the cell cycle D.)all of the aboveSubject: Microbiology The author of a general biology textbook writes in reference to the development of antibiotic resistance, “The speed at which bacteria reproduce ensures that sooner or later a mutant bacterium will appear that is able to resist the poison.” How might this mutant bacterial cell appear? Do you agree with the statement? Does this bode ill for the future use of antibiotics?You are given two tubes, one containing cells from normal tissue and thr other containing cells from human cancer. Before you begin your studies, the labels fell off the test tubes and you no longer know the identity of each sample. Describe at least two experiments you could do to determine which tube contains the cancer cells.