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Transcript
The Cellular Organelles include: Cell Membrane: is like the skin that surrounds and protects the contents of the cell. The cell membrane controls the movement of substances in and out of the cell. Cytoplasm- is the jelly-like center that helps support other structures in the cell. Nucleus- is a large dark and round and is easily found. It contains Chromosomes,or DNA. The nucleus is the brain of the cell. Vacuoles- are balloon like spaces within the cytoplasm which are used for food storage and waste disposal. Endoplasmic reticulum (ER)- folded membrane that forms a system of canals for transport of substances throughout the cell. Mitochondria- oval shaped organelles which produce energy for the cell. Muscle cells have more mitochondria as they need more energy to function. Plastids- are associated with the production and storage of food in plants. Chloroplasts- are plastids that contain the green pigment chlorophyll. They specialize in photosynthesis. Chromoplasts are another type of plastid that store the orange and yellow pigments found in plants. Colorless plastids are called amyloplasts and are storehouses for starch. Cell walls are non-living walls around the cell membranes of plants. They are composed of cellulose (fiber) and their main function is to support the cell and give it its rigid shape. Some cells have only one primary cell wall, while others need extra strength and have a secondary cell wall. Talk with your group: 1.What types of plant cells may need a secondary cell wall? 2.Why would you expect to find more amyloplasts in a potato tuber (root) than a potato leaf. Give me another example of where you might find amyloplasts.