Developing pedagogies for the Virtual Campus 27 th January 2012.
January 10 th , 2012
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Transcript of January 10 th , 2012
January 10th, 2012
Today’s Agenda•Take notes on the cell, filling out your cell tables
Daily Activity•Get out your packets.•Open to table in the middle of the packet and prepare to take notes.•FOR TODAY ONLY: Sit in the front 8 desks…if you mess up while in this formation, I will remove you from class.
Cells• Cells are the basic unit of structure
and function in all living things.• Many different types of cells but we
will focus on Plant and Animal cells.• Contain smaller compartments
called organelles which each have a specific function.
Plasma Membrane• Also called the Cell Membrane.• Outermost portion of the cell.• Keeps all the pieces of the cell inside.• Characterization:
Purse or human skin.
Cytoplasm• Fluid that fills the cell.• Made of dissolved amino acids, sugars and
fatty acids the cell uses to function.• Characterization:
Filling of Ding Dong, Or the Jell-O in Raspberry
Jell-O.
Plastids• A double membrane
bound organelle involved in the synthesis and storage of food, and is commonly found within the cells of photosynthetic organisms, like plants.
• Characterization: Cafeteria
Centrioles
• Help with Cell division• Important part of mitosis and meiosis.• Made of microtubules• Barrel Shaped.
• Characterization: Obstetrician
Mitochondria
• Provide the energy the cell needs to move, divide and contract.
• Produces ATP = primary source of energy for the cell.
• Characterization: Power Plant
Vacuoles• Storage Bubbles. Store nutrients and wastes
until they can get transported out of the cell.• Found mostly in plants, but also found in
animals.• Characterization:
Storage Bin, or a Water Jug
Lysosome
• Holds enzymes created by the cell.• Function is to digest things.• Work in low oxygen and pH zones• Characterization: Sewage
Treatment Plant
Ribosome• Used to produce proteins which are used as
enzymes to support most functions of the cell.• Build chains of proteins, one amino acid at a
time.• Characterization: Construction Workers
Smooth Endoplasmic Reticulum• Network of membranes throughout the cell.• Looks like a bunch of tubes put together.• Important for storage within the cell. Usually
stores steroids. Characterization:
Storage Unit
Rough Endoplasmic Reticulum• Synthesis and Packaging of proteins.• Looks like a bunch of tubes put together
covered in ribosomes.Characterization: Packing Plant
Golgi Apparatus/Body• Membrane Bound vesicle that packages
microtubules for transportation elsewhere in the cell.
• Builds Lysosomes• Characterization: Packaging Plant
Nucleus• Contains the DNA of the cell. • Controls the eating, moving and reproduction
of the cell.• Characterization: The Brain
Nuclear Envelope• Holds the contents of the nucleus.• Rough ER is attached to it, they flow
seamlessly together.• Characterization: Paper Towel
Chromatin• Genetic material made of DNA and proteins
that creates Chromosomes. • Packages DNA so thatit can fit in a smaller volume.• Characterization: Vacuum sealer.
Nucleolus• Produces Ribosomes• Characterization: Production Facility
Plant Cells: Different Organelles• Cell Wall• Protective “box” around the plasma membrane
and the cell.• Give the cell its shape• Allow plants to grow to great heights.• Characterization: Balloon ina cardboard box.
Chloroplasts• Produce food for the cell.• Converts energy of the sun into sugars.• Characterization: Sugar Production Facility
Vacuoles• Very Large• Hold water• A plant cell changes size depending on the
amount of water present in the vacuole.• Characterization: Water Balloon