Bifrlrn*ractiv«Click & LearnSiudenT WorksheetTheEukaryotic Coll Cycle and CancerIn DepthTo use this document first read the Instructions andFAQs This document is made available by the Howard HughesMedical Institute. Using this document you agree touse fh*5 document >vraccordance wrfh the Terms ofUse.INTRODUCTIONThis handout complements the Click St Learn The Eukaryotic CetJCycle and Cancer andis intended as anin-depth examination of the cell cycle and the protein players involved. For a more general overview, please seethe overview version.PROCEDUREFollow the instructions as you proceed through the Click a Learn and answer the questions in the spaces below.Click on the "Background" tab on the right side.1.Compare and contrast the reasons cell division is important for unicellular (single-celled) and multicellularorganisms.Cell division is the only way single-celled organisms can reproduce whereas for multicellular organisms it is theonly way to grow and repair dam aged ceIls.2.Provide an example of why cell division remains important to an adult organism even after it is fullydeveloped.After growth, division remains important innormalcell turnover, such asin skinandgul.where cells arecontinuously renewed Other cells have to divide to heal wounds like skin cuts or broken bones.3.What is the role of growth factors?Growth factors are the ligands reeded to activate a signal transduction pathway to result in cell division as acellular response.4Cells djyide, differentiate, or die. What is differentiation?Differentiation is the process when cells become specialized in structure and function. During differentiationcells develop specific characteristics that allow them to perform a particular role within the body. Someexamples are, cells may differentiate into muscle cells, nerve cells, or skin cells, each with unique structuresand functions.5.What is apoptosis? Explain its purpose.Apoptosis is a natural process by tvhich cells in a living organism intentionally self-destruct. It is a carefullyregulated process that plays an essential role in development and the maintenance of healthy tissues.The purpose of apoptosis is to eliminate unnecessary, damaged, or potentially harmful cells, which couldotherwise interfere with the normal functioning of the organism.CellCydem m . E cTE-scwe.crjUpctated FefiruB2OZCF a r s i of 10Preview Mode
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