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PCS Liv Env

Chapter 7 Vocabulary

TermDefinition
Active Transport the cell uses energy to move molecules against the flow of diffusion (low to high concentration)
Cell basic unit of structure and function in living things
Cell Membrane thin flexible barrier around the cell; selectively permeable
Cell Wall rigid layer around the cell membrane; provides support and protection for the cell; only found in plant cells
Chloroplast uses energy from sunlight to make food molecules
Chromatin granular material visible within the nucleus
Cytoplasm watery material around organelles; most reactions occur here
Cytoskeleton maintains cell shape with a network of protein filaments
Diffusion process by which molecules of a substance move form areas of high concentration to low concentration; does not require energy; molecules spread evenly (Hint: open a perfume bottle and the smell will eventually fill room)
Endoplasmic Reticulum assembles components of the cell membrane and modifies some proteins
Eukaryote organism whose cells contain a nucleus (Hint: you)
Golgi Bodies (Golgi Apparatus) attaches carbohydrates and lipids to proteins using enzymes
Mitochondria uses energy from food to make high energy compounds; the cell's powerhouse; cell's respiration
Nucleus controls most cell processes and contains DNA; brain of cell
Organelle specialized structures within a cell that perform important cell functions
Osmosis diffusion of water through a selectively permeable membrane; must have membrane (Hint: cell placed in fresh water will absorb water until it becomes swollen and may burst; cell placed in salt water will shrink - Salt Sucks!)
Phagocytosis process by which extensions of cytoplasm engulf large particles
Receptor Molecules receive appropriate cells and trigger some sort of response by the cell (fit together like a puzzle piece)
Ribosome make protein (Hint: ribs have some - meat ribs are protein)
Vacuole sac life structures for storage of water, salts, proteins, and carbohydrates
Created by: Ms.Sala
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