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Cell Theory:
Name the three parts |
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Definition
1.) All living things are composed of cells.
2.) Cells are the basic unit of structure and function in living things.
3.) All cells come from other cells. |
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| Photographs of the view through a microscope. |
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| A cell part with a specific job. |
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| A thin outer covering that defines the cell border and regulates chemicals going in and out of the cell. |
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| Organelle that contains the cell's DNA. |
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| The area of the cell between the nucleus and the plasma membrane where various organelles are located. |
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| A strong outer membrane that protects the cell and maintains its shape (Plant cells only). |
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| Cells that do not have a nucleus and lack most other organelles. |
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| Cells that have a nucleus enclosed by a membrane, as well as other organelles with membranes. |
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| A two-layer sandwich of molecules that surrounds the organelle or cell. |
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| Located in the plasma membrane (phospholipid bilayer); their function is to help move certain substances across the membrane. |
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| The movement of the molecules of a substance from where they are more concentrated to where they are less concentrated. |
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| The point after diffusion at which the concentration off the molecules of a substance is the same throughout. |
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| Selectively Permeable Membranes |
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| Membranes that let some substances pass through but completely block other substances. |
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| Type of passive transport in which transport proteins make a path for certain molecules to pass through the membrane. |
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| The diffusion of water across a selectively permeable membrane. |
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| A solution that has a higher concentration of solute and a lower concentration of water than another solution. |
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| A solution that has a lower concentration of solute and a higher concentration of water than another solution. |
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| A solution that has the same concentration of solute as another. |
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| Using energy to move molecules across a membrane. |
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| Transporting molecules across a membrane without the use of energy. |
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| Small membrane sacs that are specialized in moving products into, out of, and within a cell. |
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| A process in which a vesicle fuses with the plasma membrane and spills its contents outside the cell. |
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| A process in which vesicles bud inward from the plasma membrane and carry materials into the cell. |
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| A pair of membranes that surrounds the cell nucleus. |
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| A ball-like mass located inside the nucleus. |
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| Clusters of proteins and nucleic acids that build up new proteins. Its function is to make proteins that either stay in the cytoplasm (if they are made in the cytoplasm) or move throughout the cell (if they are made elsewhere). |
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| Endoplasmic Reticulum (ER) |
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| A continuous network of membranes throughout the cell. There are two different types of this organelle: Rough and Smooth. The rough type has ribosomes attached to it, while thw Smooth type does not. Enzymes built in the Smooth type perform many different functions, such as building lipid molecules and producing hormones. |
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| An organelle that modifies, stores, and sends proteins and other chemicals to their next destinations. |
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| Large, membrane-bound sacs that are storage places for undigested nutrients, colorful pigments, or self-defense poisons. |
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| Membrane-bound sacs that contain digestive enzymes that break down large molecules. This organelle's function is to destroy harmful bacteria and break down damaged organelles. |
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| The organelles found only in some plant cells where photosynthesis takes place. |
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| The organelles in which cellular respiration takes place. |
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| The main energy source for cells. |
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| A network of fibers that supports organelles and maintains the shape of a cell. |
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| Straight, hollow tubes of protein that make a cell rigid and give it shape and organization. They provide "tracks" along which other organelles can move. |
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| Thinner, solid rods of protein that enable a cell to move or change shape. |
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| Long, thin, whip-like structures with a core of microtubules. |
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| Shorter, thin whip like structures that have a core of microtubules, like flagella, but move with a back-and-forth motion. |
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