Parts of the Cell Week of January 24th.

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Presentation transcript:

Parts of the Cell Week of January 24th

Journal Entry: 1/24/13 What is the main difference between eukaryotic and prokaryotic cells?

Cell Wall A rigid structure that surrounds the cell membrane and provides support to the cell. Some animal cells have cell walls and all plant cells have cell walls.

Cell Membrane All cells have a cell membrane. The cell membrane is a protective barrier that encloses a cell. Controls the movement of materials into and out of the cell.

Cytoskeleton A web of proteins in the cytoplasm that acts as both a muscle and a skeleton. Keeps the cell’s membrane from collapsing.

Nucleus A large organelle in a eukaryotic cell that contains the cell’s DNA, or genetic material. Nucleolus is the dark spot in the nucleus where a cell begins to make ribosomes.

Ribosomes All cells have ribosomes. The site of protein synthesis. Ribosomes are composed of RNA and protein.

Endoplasmic Reticulum (ER) A system of membranes that is found in a cell’s cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids.

ER cont. Rough ER is the ER covered in ribosomes. Smooth ER is the ER that lacks ribosomes.

Mitochondria The cell organelle that is surrounded by two membranes and that is the site of cellular respiration. Where sugar is broken down to produce energy.

Chloroplasts Organelles in plant and algae cells in which photosynthesis takes place. Photosynthesis is the process by which plants and algae use sunlight, carbon dioxide, and water to make sugar and oxygen.

Golgi Complex (Golgi Bodies) Helps make and package materials to be transported out of the cell.

Vesicle A small sac that surrounds material to be moved into or out of a cell. Move materials within the cell as well.

Lysosome Contains digestive enzymes used to digest waste materials and protect the cell from foreign invaders.

Vacuoles In plant cells, vacuoles are large vesicles. Stores water and other materials.

The Factory Model A cell is like a factory. Develop your own example of a model of the cell.