Bio 5.1.PDF

Chapter 5: Eukaryotic Cells i-esson 5.1 Cells lntroduction Wrth the development of the microscope, scientists were able to observe a previously invisible world, and tre groundwork for the cell theory was laid. The cell theory states that all living organisms are composed cf cells and that all cel...

Chapter 5: Eukaryotic Cells i-esson 5.1 Cells lntroduction Wrth the development of the microscope, scientists were able to observe a previously invisible world, and tre groundwork for the cell theory was laid. The cell theory states that all living organisms are composed cf cells and that all cells come from pre-existing cells. In addition to understanding that cells are building Uocks of larger organisms, scientists were also able to observe free-living unicellular microorganisms. The lessons in this chapter highlight the development of the cell theory and provide a review of the vital cornponents of eukaryotic cells and their functions, with an emphasis on animal cells. The unique cornponents and cellular functions of prokaryotic cells are covered in Chapter 6. 11.0:! Cell Theory a The modern version of the cell theory includes the principles outlined in Figure 5.1.  Chapter 5: EukarYotic t All living organlsms are made uP of one or more cells' Prokaryotic cell ,.;i'r"" -' The cell is the structural and functional unit of all living things. Eukaryotic cell cYcle Prokaryotic binary fission Origin of - rePlication ffi.t-^." i ul\^ Y All cells come from pre-existing cells' reproducing through 'ffi * cell division. ,ffiYffi., t/\ ffi'ffi, All cells contain genetic Linear information encoded in chromosome DNA, which is Passed to daughter cells during cell division. " t9 /1,""". ci..t, r, r'. ,: -\ "., L'" j,L;\-r._, *J Carbohydrate J The basic chemical >.6'n'.'.'e ' '4"t \ composition of all cells * '.1.1't Nucleic acid (and all living things) is the same. ,ro,",nffi -?"\ Lipid Eukaryotl. cell Prokt.Yotic coll Metabolism governs the flow of energY within cells. Figure 5.1 Principles of the cell theory' 146  ehapt*r 5: ffukaryotic C*ll* ,','hile not considered cells, infectious agents such as viruses share some features with living organisms. -