DP Biology 1.2 Ultrastructure of Cells

DP Biology 1.2 Ultrastructure of Cells

1. 1.2 Ultrastructure of Cells DP Biology R. Price v. 1 2015

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3. #1 Prokaryotes have a simple cell structure without compartments Prokaryotes do not have a nucleus Cell membrane present Cell wall has peptidoglycan 70S ribosomes Area of cytoplasm that looks lighter = nucleoid (DNA, but not nucleus) Allott 19

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6. #2 Eukaryotes have a compartmentalized cell structure Eukaryotes have a nucleus Eukaryotes have organelles Organelles have specialized functions Allott 23

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17. #3 Prokaryotes divide by binary fission Asexual reproduction Single circular chromosome replicates A copy moves to each end of the cell Cell divides

18. #4 Electron microscopes have a much higher resolution than light microscopes Max light microscope resolution .2µm Red and white blood cells Max electron microscope resolution .001µm Red and white blood cells

19. Sources Content   Allott , Andrew, and David Mindorff .  Biology: Course Companion . 2014 ed. Oxford: Oxford UP, 2014. Print. Oxford IB Diploma Programme. Walpole , Brenda.  Biology for the IB Diploma . 2nd ed. Cambridge: Cambridge UP, 2014. Print. Images Unless otherwise noted, images are obtained from Pixabay ( www.pixabay.com ) and used under the CC0 Public Domain license.