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Download cell Basic unit of structure and function of all living things. All liv
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Transcript
cell Basic unit of structure and function of all living things. All living things are made of these. nucleus Determines the cell’s activities, the brain of the cell nucleus cell wall cell wall organelles A rigid layer that surrounds PLANT cells only. It gives them strength an protection Small structures within cells that perform particular functions. organelles (jobs) Examples: mitochondria, vacuole, chloroplasts cell membrane Cell membrane cytoplasm cytoplasm Holds the parts of the cell together. Separates the cells from its surroundings Jellylike substance containing many chemicals to keep the cell functioning. mitochondria Organelles that release energy from food. They are the BATTERY of the cell because it provides all the power. chloroplasts Organelles that make food for the PLANT CELL. chromosomes Threadlike structures that contain information about the characteristics of a plant or animal. They determine things like eye color, height, and hair color. diffusion Particles of a substance move from an area where there are a lot of particles of a substance to an area where there are fewer particles of a substance. More to less vacuole An organelle that stores food, water and wastes. (vacuum) osmosis The movement of water and dissolved materials through cell membranes (in and out) What is a cell? Are all cells the same? How can we see cells? Who was one of the first scientists to use a microscope? Cells are the smallest part of living things and have specific job. All cells have the same parts, but they are not exactly the same. There are different cells for blood, skin, heart, hair, etc. Most cells are too small to see with our eyes. We must use a microscope to see them. A microscope makes the image of a cell larger Robert Hooke is a famous scientist who used a microscope to look at plant cells in the 1600’s