Cell anatomy
This presentation is the property of its rightful owner.
Sponsored Links
1 / 17

Cell Anatomy PowerPoint PPT Presentation


  • 84 Views
  • Uploaded on
  • Presentation posted in: General

Cell Anatomy. Chapter 3. Objectives. Discuss the structure of a typical cell. Describe the molecular structure and function of cell membranes. Identify by name the organelles of the cell. Discuss the structure and function organelles of the cell.

Download Presentation

Cell Anatomy

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Cell anatomy

Cell Anatomy

Chapter 3


Objectives

Objectives

  • Discuss the structure of a typical cell.

  • Describe the molecular structure and function of cell membranes.

  • Identify by name the organelles of the cell.

  • Discuss the structure and function organelles of the cell.

  • Discuss the organization and generalized function of chromatin material in the nucleus.

  • Describe the different types of cell connections.


Functional anatomy of cells p 69

Functional Anatomy of Cells (p. 69)

  • The typical cell (Fig. 3-1)

    • 3 components (look on page 73)

  • Cell types (Table 3:1)

    • Give 3 examples


Cell membranes fig 3 2 table 3 3

Cell Membranes (Fig. 3-2, Table 3-3)

  • Fluid mosaic model

    • Phospholipid bilayer (Fig. 2-22)

      • Hydrophilic heads

      • Hydrophobic tails (99%)

      • Cholesterol scattered to aid function at body temp


Cell membranes fig 3 2 table 3 31

Cell Membranes (Fig. 3-2, Table 3-3)

  • Membrane proteins (Fig. 3-2)

    • Allow for controlled movement into and out of cell

    • Channel proteins

      • Glycoproteins act as identification markers

    • Receptor proteins

      • React to specific chemicals to permit different processes

    • Enzyme – catalyst with active sites


Cytoplasm and organelles p 73

Cytoplasm and Organelles (p. 73)

  • Cytosol

  • Membranous organelles (Table 3-2)

    • Endoplasmic reticulum (Figs. 3-5, 3-8)

    • Golgi apparatus (Figs. 3-4, 3-5, 3-8)

    • Lysosomes(Fig. 3-1)

    • Peroxisomes

    • Mitochondria (Figs. 3-6)

  • Non-membranous

    • Ribosomes (Figs. 3-3, 3-5)


Nucleus fig 3 7

Nucleus (Fig. 3-7)

  • Nuclear envelope

    • Similar to the plasma membrane of the cell

      • Holes called nuclear pores

  • Chromatin

    • Threads in non-dividing cells

    • When tightly wound = chromosomes (dividing cells)

  • Nucleolus

    • Small and non-membranous

    • Contains nucleic acids that are not DNA, but RNA


Cytoskeleton p 83

Cytoskeleton (p. 83)

  • Cell fibers (Figs. 3-8, 3-9)

    • Microfilaments = “cellular muscles”, cell shortening

    • Intermediate filaments = supporting framework

    • Microtubules = move things around in the cell

  • Centrosome(Figs. 3-1)

    • Coordinates building of things in the cell


Cytoskeleton p 831

Cytoskeleton (p. 83)

  • Cell extensions

    • Microvilli(Figs. 3-1; 3-10, A)

      • Found in the intestines to increase surface area and aide in absorption

    • Cilia (Fig. 3-10, B)

      • Flagella (Fig. 3-10, C)

        • Found only in human sperm cells


Cell connections fig 3 11

Cell Connections (Fig. 3-11)

  • Desmosomes

    • “spot welds”

    • Hold adjacent cells together

  • Gap junctions

    • Membrane channels, forming tunnels between cells

  • Tight junctions

    • “collars” , tight fusion, no permeation between cells

    • Found in intestines


Assignment

Assignment

  • Create a foldable in the shape of a cell

  • Each flap will be in the shape of the organelle

  • Must include

    • Function of organelle

    • Name of organelle


Cell anatomy

The End


  • Login