Cellular Structure - PowerPoint PPT Presentation

Loading...

PPT – Cellular Structure PowerPoint presentation | free to download - id: 76c932-NGJlY



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Cellular Structure

Description:

Cellular Structure Biology Mr. Foster Write what is underlined Components of Cells Nucleus- 2. Outer Boundary- 3. Cytoplasm / Organelles- cellular contents and ... – PowerPoint PPT presentation

Number of Views:151
Avg rating:3.0/5.0
Slides: 23
Provided by: FCHS9
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Cellular Structure


1
Cellular Structure
Biology Mr. Foster
2
  • Write what is underlined

3
Components of Cells
  • Nucleus-
  • 2. Outer Boundary-
  • 3. Cytoplasm / Organelles- cellular contents and
    specialized structures that carry out functions
    of the cell

4
Nucleus
  • Prokaryote- cell w/o nucleus
  • (DNA in neucleoid)
  • Eukaryote- cell with nucleus
  • Functions
  • Contains genetic inform.
  • Control Center- directs all cellular activity

5
Nucleus (cont.)
  • Structure / Components-
  • Nuclear envelope- regulate what enters and leaves
    nucleus (Nuclear pores)
  • Nucleolus- makes ribosomes
  • Genetic Material- DNA
  • Chromatin DNA uncoiled, threadlike, Not
    Divisional
  • Chromosomes DNA is condensed, Divisional

Clicker ?s 1-4
6
Outer Boundary
  • Cell membrane- selective boundary
  • All cells have a cell membrane
  • Cell wall
  • give plant and bacteria cells
  • structure

7
Cell Membrane (cont.)
  • Structure- Fluid Mosaic Model
  • Phospholipids
  • Phospholipid bilayer
  • forms membrane

Phosphate- likes H2O (hydrophilic)
Lipid- does not like H2O (hydrophobic)
Clicker ?s 5 6
8
Cell Membrane (cont.)
  • Structure provided to membrane by
  • 4. Cytoskeleton supports the membrane
  • a. microfilaments - strength, anchor cells
  • b. microtubules movement

9
Cytoskeleton
Clicker ?s 7-9
10
Cytoplasm
  • Cytoplasm space between nucleus and cell
    membrane
  • Cytosol semitransparent jellylike substance
    that surrounds organelles

11
Organelles- little organ
  • Endoplasmic Reticulum-
  • Transports materials through inside of cell
  • Modifies proteins and quality control center
  • Types of ER
  • Rough ER
  • Has ribosome attached
  • Proteins to be sent outside cell
  • Smooth ER
  • No ribosomes
  • Make lipids, detox cell

12
Organelles (cont.)
  • Ribosome-
  • Synthesize proteins
  • Free vs. attached

13
Organelles (cont.)
  • Mitochondria
  • Provides energy for the cell ATP
  • Cellular respiration
  • Own DNA
  • Endosymbiont Theory
  • Free living organism that
  • entered a relationship w/
  • Nucleated cells
  • Inherited from mother only
  • Folds increase surface
  • area

14
Organelles (cont.)
  • Lysosomes
  • Membrane bounded sacs that contain enzymes
  • Clean up cell
  • Lysosomal Storage disease
  • (Tay Sachs)- missing the
  • enzyme that breaks down the
  • lipid that surrounds the nerve
  • cell
  • Buries the nervous system

15
(No Transcript)
16
Organelles (cont.)
  • Centrioles
  • Function in cell division
  • Organize spindle fibers

17
Organelles (cont.)
Clicker ? 10-16
  • Golgi Apparatus - (Golgi bodies) modifies, sorts,
    and ships proteins in packages called vesicles.

18
Plant Cells Contain Some Structures That Animal
Cells Lack
  • Plant cells have three additional structures that
    are not found in animal cells.
  • A cell wall
  • Several chloroplasts
  • Central vacuole
  • These three structures are shown in the plant
    cell to the right.

19
Cell Transport
  • Passive energy not required to move material
    across membrane
  • Diffusion molecules move from high to low
    concentration to reach equilibrium

20
Cell Transport
  • Passive Transport (cont)-
  • Osmosis type of diffusion involving H2O
    molecules only

21
Cell Transport (cont.)
  • Active Energy required to move materials across
    membrane
  • Low to High concentration
  • Ion pumps/Channels- Cl-, Na, K, Ca
  • Endocytosis / Exocytosis membrane forms pockets
    to move material

22
Endocytosis / Exocytosis
Clicker ?s 17-20
About PowerShow.com