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key concepts

ch.1 science key concepts

discovering cells the invention of the microscope made the discovery of the cell possible
discovering cells the cell theory states that: all living things are made of cells; cells are the basic units of life; all cells come from other cells
looking inside cells the cell membrane protects the cell and controls what substances enter and leave it
looking inside cells the nucleus is the cells control center
looking inside cells organelles in the cytoplasm perform many vital functions
chemical compounds in cells the groups of organic compounds found in living things are carbohydrates, lipids, proteins, and nucleic acids
chemical compounds in cells without water, mst chemical reactions within cells could not take place
the cell in its environment substances can move into and out of a cell by diffusion,osmosis, or active transport
the cell in its environment diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. osmosisis the diffusion of water molecules through a selectively permeable membrane
the cell in its environment active transport requires the cell to use energy while passive transport does not
the cell in its environment if a cell grew too large, it could not function well enough to survive
Created by: briemarie7