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First observed cells dividing and discovered that all cells come from other pre-existing cells
3 parts of the Cell Theory
1. All living things are made of cells.
2. Cells are the basic unit of structure and function in living things.
3. Cells come from the reproduction of existing cells.
Microscopic structures of the cell found in the cytoplasm that perform the functions of the cell; means "little organ"
Jelly-like (watery) substance between the cell membrane and nucleus that contains all the organelles
Has ribosomes attached to it and functions in protein synthesis and to transport materials throughout the cell
Stacks of flattened sacs that function to package, sort, process, and send out compounds in the cell
Internal cell structures that help the cell maintain its shape and help organelles move around
Green colored structures that are used for storage and are the site for photosynthesis in a plant cell
Fluid-filled sacs for storage of food, water, and wastes; small in animal cells, large in plant cells
Openings in the nuclear membrane that allow for materials to enter and leave the nucleus
Movement of molecules from an area of high concentration to an area of low concentration until equilibrium is reached
A type of diffusion that uses water to move molecules from high to low concentration through a selectively permeable membrane
One in which there is more solute/less solvent outside the cell and less solute/more solvent inside the cell; causes a cell to shrink
One in which there is less solute/more solvent outside the cell and more solute/less solvent inside the cell; causes a cell to burst as water rushes in
Uses the proteins in the cell membrane to move molecules across the membrane; does not require cell energy
Process that brings large liquid molecules into the cell forming vacuoles; cell drinking
Process of removing contents of a cell as the vacuoles bond with the cell membrane, open up, and eject its contents
Scanning Electron Microscope
Allows electrons to move across the surface of a dead specimen to get a really good picture of the outside of a specimen
Transmission Electron Microscope
Allows electrons to pass through a dead, thinly sliced specimen to get good pictures of the inside of a specimen
Cell membrane information
Made of a lipid bilayer
Lipids have hydrophobic (water repelling) and hydrophilic (water loving) ends.
Contains carbohydrates that help in cell recognition as each has a cell marker that is unique.
Contains proteins that help channel molecules through the membrane.
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