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science chapter #1

cell part, diffusion and osmosis

Cell Membrane A membrane that separates the inside of the cell from it's surroundings.
Cytoplasm A gooey substance inside the cell made of organelles, water and other materials.
Nucleus Controls all activities in a cell and holds the DNA.
Chloroplast Makes chemical energy by trapping energy from the sun and changing it.
Cell Wall A layer of rigid, tough material that surrounds the plant cell and gives it a box like shape.
Mitochondria Produce energy by cellular respiration.
Golgi Body sorts proteins and makes them into vesicles.
Vesicles Function like a mail system. Carrying proteins, nutrients and water into, out of and around the cell.
Endoplasmic Reticulum (E.R.) A group of membrane covered channels. Can be rough or smooth. E.R.s have ribosomes all over them.
Ribosomes Small thing that make proteins. They float around the cell or attach to the E.R.
Vacuoles Compartments that sometimes store waste and are large in plant cells and small in animal cells.
Lysosome Contain chemicals that break down food particles, cell waste and worn out cell parts.
Diffusion The movement of particles from an area of higher concentration to an area of lower concentration.
Osmosis The diffusion of water molecules through a selectively permeable membrane,
Concentration The amount of a substance in a given space.
Selectively Permeable Membrane Allows some materials to pass through, but keeps other materials out.
5 characteristics of living things 1. Respond to environment 2. Need energy 3. Grow 4. Reproduce 5. Get rid of waste
Only in plant cell chloroplast and cell wall
Created by: bracefaces