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2.03 Cell Structure and Function
Transcript of 2.03 Cell Structure and Function
Hello! I am the nucleus of an animal cell and your mentor for the time being. Welcome to the Animal Cell tour. As a new Ribosome organelle in the cell world it is my job to familiarize you to your new home.
The Cell Membrane is a selective barrier surrounding the cell. It allows certain things to pass into it. It is made of lipids and proteins.
Let's talk about myself :P
I am a large organelle that determines the functions in a cell. I have the cells genetic information and DNA in me. The Nucleolus is found inside me as well, it is important for the synthesis of ribosomes.
Thick fluid that surrounds the cells organelles. Made of water and dissolved salts, ions, and organic molecules.
Found in the cells nucleus. Has similar functions in a cell as our bones and muscles have in our body.
Smallest organelles in a cell. Can be found free or connected to other organelles. Made of RNA and proteins. Job is top synthesize proteins made in the nucleus of a cell.
Network of membranes in a cell divided into two parts, Rough ER and Smooth ER.
Covered by ribosomes that synthesis proteins. The RER keeps proteins separated from the rest of the cell. Makes and stores protein.
Construction of lipids, deconstruction of carbohydrates, detoxifies of harmful substances in the cell.
Made of stacks of membrane sacs. Proteins enter the GA to be modified and stored. Then sent in or out of the cell. At one side of the GA proteins are stored and on the other side vesicles are formed and come off to transport materials.
Lysosomes contain membrane sacs that contain enzymes. Used to digest and break down large molecules. Made in the Rough Endoplasmic Riticulum. All cells contain lysosomes but each with a different enzyme to break down different macromolecules.
Vacuoles serve as storage functions in a cell. They can store food and water that pass through the cell membrane. Plant cells have bigger vacuoles due to the lack of lysosomes.
Enclosed in a layer of two membranes. The Mitochondria acts like the cells digestive system. It takes in nutrients and breaks them down. Cellular respiration is an important function that occurs in the mitochondria.
THE ANIMAL CELL