Chapter 4 - Chapter 4 The Cell Anatomy and Division 1 The...

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Chapter 4 The Cell: Anatomy and Division 1
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The Anatomy of a Cell Figure 3.2 2
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l Nucleus ¡ DNA bound to histones ¡ Chromatin ¡ Chromosomes l Chromatids ¡ Nucleoli ¡ Nuclear membrane l Nuclear pores A typical cell 3
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The Nucleus 4
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5
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The Plasma Membrane 6
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l Selective permeability l Microvilli ¡ Fingerlike projections The Plasma Membrane 7
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l The fluid (cytosol) l The organelles the cytosol surrounds The cytoplasm contains: 8
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l The organelles 9
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l Are responsible for manufacturing proteins l Are composed of a large and a small ribosomal subunit l Contain ribosomal RNA (rRNA) l Can be free or fixed ribosomes Ribosomes 10
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11
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l Intracellular membranes involved in synthesis, storage, transportation and detoxification l Forms cisternae l Rough ER (RER) contains ribosomes ¡ Modifies and stores new proteins ¡ Transports new proteins to other areas of the cell l Smooth ER (SER) ¡ Involved in lipid synthesis Endoplasmic reticulum 12
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The Endoplasmic Reticulum 13
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l Forms secretory vesicles ¡ Discharged by exocytosis l Forms new membrane components l Packages lysosomes Golgi Apparatus 14
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This note was uploaded on 01/06/2012 for the course BIOL 2401 taught by Professor Elainefanin during the Fall '11 term at Collins.

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Chapter 4 - Chapter 4 The Cell Anatomy and Division 1 The...

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