Chapter 7.2
Eukaryotic Cell Structure
Goal 1:
Describe the structures and
function of the cell nucleus
• Nuclear Envelope
• Surrounds nuclear contents
• Phospholipid bilayer membrane
• Nuclear pores regulate molecule movement...
TEM
picture
• Chromatin
• DNA bound to
proteins
• Stores genetic
material
• Loosely floating
• Chromosomes
• Condensed
chromatin
• Cell division
• Contains DNA =
genetic material
• Nucleolus
• Small dense region
• Ribosome
assembly
• Summary of Nucleic Functions
• Access to nucleic materials regulated
• Contains genetic material as DNA
• DNA prepared f...
Goal 2
Describe the structures and
functions of the major cell
organelles
• Ribosomes
• RNA and protein
• Rough
endoplasmic
reticulum
• Build protein chains
• Endoplasmic Reticulum
• Near the nucleus
• Ribosomes assemble proteins here
RER
• Lipids assembled on SER
• Toxins are d...
• Golgi Apparatus
• Closely stacked membranes
• Modify, sort, package proteins and
lipids
• Stores
• Transports for secret...
• Lysosomes
• Small enzyme filled sac
• Breaks down biomolecules & organelles
• Tay-Sach’s disease
http://www.flickr.com/photos/exothermic/2611995050/in/set-72157605406260833/
lysosomes
• Vacuole
• Used for storage
• Water , salts, proteins, carbohydrates
• Central vacuole in plants
• Contractile vacuole in...
Contractile vacuoleContractile vacuoleCentral vacuoleCentral vacuole
• Mitochondria
• Chemical energy conversion
• Organelle with own double
membrane
• Human mitochondria passed on by
materna...
• Chloroplasts
• Photosynthesis
• Stacks of green membranes
• Convert suns energy into chemical energy
• Contains own DNA
Goal 3
Identify the main roles of the
cytoskeleton
• Cytoskeleton
• Protein filaments
• Maintains cell
shape
• Cell movement
• Centrioles
• Only in animal cells
• Organizes cell parts during cell division
• Microfilaments
• Thread-like, made of Actin
• Provides flexible support and movement
• Microtubules
• Hollow tubes made of tubulin
• Provides support
• Cell division
• Cilia and flagella for cell movement
Cilia & Flagella
7.1 7.2 powepoint cells 2010
7.1 7.2 powepoint cells 2010
7.1 7.2 powepoint cells 2010
7.1 7.2 powepoint cells 2010
7.1 7.2 powepoint cells 2010
7.1 7.2 powepoint cells 2010
7.1 7.2 powepoint cells 2010
7.1 7.2 powepoint cells 2010
7.1 7.2 powepoint cells 2010
7.1 7.2 powepoint cells 2010
Upcoming SlideShare
Loading in …5
×

7.1 7.2 powepoint cells 2010

1,601 views

Published on

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,601
On SlideShare
0
From Embeds
0
Number of Embeds
5
Actions
Shares
0
Downloads
7
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • Nuclear pore complex … largest protein complex in cell …
  • TEM (transmission electron microscopy) picture taken in 1976
  • Protectors of genetic info during cell division
  • Ganglioside a lipid molecule that does not get broken down… build up of this lipid damages brain and nerve cells resulting in loss of functions (blind, deaf, unable to swallow) and eventual death, usually by age 4
  • These are the notes that Exothermic added to this picture: “These progesterone treated CHO cells have been stained with Acridine Orange and are viewed through a phase contrast microscope. Acridine Orange is a vital stain and as such must be used on a living cell since metobolic activity is critial to the function of the stain. Upon entering organelles with a low pH such as lysosomes, Acridine Orange becomes protonated and appears orange when viewed under specific light wavelenths. In the nucleus, Acridine Orange attaches to DNA and appears green.Within seconds after these cells are exposed to the wavelenth of light that excites Acridine Orange the lysosomes would often burst, presenting us with a spectacular display. ”
  • 7.1 7.2 powepoint cells 2010

    1. 1. Chapter 7.2 Eukaryotic Cell Structure
    2. 2. Goal 1: Describe the structures and function of the cell nucleus
    3. 3. • Nuclear Envelope • Surrounds nuclear contents • Phospholipid bilayer membrane • Nuclear pores regulate molecule movement • Proteins • RNA
    4. 4. TEM picture
    5. 5. • Chromatin • DNA bound to proteins • Stores genetic material • Loosely floating
    6. 6. • Chromosomes • Condensed chromatin • Cell division • Contains DNA = genetic material
    7. 7. • Nucleolus • Small dense region • Ribosome assembly
    8. 8. • Summary of Nucleic Functions • Access to nucleic materials regulated • Contains genetic material as DNA • DNA prepared for cell division • First step in ribosome formation
    9. 9. Goal 2 Describe the structures and functions of the major cell organelles
    10. 10. • Ribosomes • RNA and protein • Rough endoplasmic reticulum • Build protein chains
    11. 11. • Endoplasmic Reticulum • Near the nucleus • Ribosomes assemble proteins here RER • Lipids assembled on SER • Toxins are detoxified
    12. 12. • Golgi Apparatus • Closely stacked membranes • Modify, sort, package proteins and lipids • Stores • Transports for secretion
    13. 13. • Lysosomes • Small enzyme filled sac • Breaks down biomolecules & organelles • Tay-Sach’s disease
    14. 14. http://www.flickr.com/photos/exothermic/2611995050/in/set-72157605406260833/ lysosomes
    15. 15. • Vacuole • Used for storage • Water , salts, proteins, carbohydrates • Central vacuole in plants • Contractile vacuole in paramecium
    16. 16. Contractile vacuoleContractile vacuoleCentral vacuoleCentral vacuole
    17. 17. • Mitochondria • Chemical energy conversion • Organelle with own double membrane • Human mitochondria passed on by maternal ovum • Contains own DNA
    18. 18. • Chloroplasts • Photosynthesis • Stacks of green membranes • Convert suns energy into chemical energy • Contains own DNA
    19. 19. Goal 3 Identify the main roles of the cytoskeleton
    20. 20. • Cytoskeleton • Protein filaments • Maintains cell shape • Cell movement
    21. 21. • Centrioles • Only in animal cells • Organizes cell parts during cell division
    22. 22. • Microfilaments • Thread-like, made of Actin • Provides flexible support and movement
    23. 23. • Microtubules • Hollow tubes made of tubulin • Provides support • Cell division • Cilia and flagella for cell movement
    24. 24. Cilia & Flagella

    ×