Biology Ch. 7
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Cell | Basic unit of all forms of life.
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| Cell Theory | Fundamental concept of biology that states that all living things are composed of cells; that cells are the basic unit of structure and function in living things; and that new cells are produced from existing cells.
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| Cell Membrane | Thin, flexible barrier that surrounds all cells; regulates what enters and leaves the cell.
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| Nucleus | Structure that contains the cell's genetic material in the form of DNA.
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| Eukaryote | Organism whose cells contain a nucleus.
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| Prokaryote | Unicellular organism that lacks a nucleus.
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| Cytoplasm | In eukaryotic cells, all cellular contents outside the nucleus; in prokaryotic cells, all the cells' contents.
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| Organelle | Specialized structure that performs important cellular functions within a cell.
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| Vaculoe | Cell organelle that stores materials such as water, salts, proteins, and carbohydrates.
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| Lysosome | Cell organelle that breaks down lipids, carbohydrates, and proteins into small molecules that can be used by the rest of the cell.
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| Cytoskeleton | Network of protein filaments in a eukaryotic cell that gives the cell its shape and internal organization and is involved in movement.
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| Centriole | Structure in an animal cell that helps to organize cell division.
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| Ribosome | Cell organelle consisting of RNA and protein found throughout the cytoplasm in a cell; the site of protein synthesis.
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| Endoplasmic Reticulum | Internal membrane system found in eukaryotic cells; place where lipid components of the cell membrane are assembled.
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| Golgi Apparatus | organelle in cells that modifies, sorts, and packages proteins and other materials from the endoplasmic reticulum for storage in the cell or release outside the cell.
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| Chloroplast | Organelle found in cells of plants and some other organisms that captures energy from sunlight and converts it into chemical energy.
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| Mitochondrion | Cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use.
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| Cell Wall | Strong, supporting layer around the cell membrane in some cells.
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| Lipid Bilayer | Flexible double-layered sheet that make up the cell membrane and forms a barrier between the cell and its surroundings.
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| Selective Permeable | Property of biological membranes that allow some substances to pass across it while others cannot; also called semipermeable membrane.
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| Diffusion | Process by which particles tend to move from an area where they are more concentrated to an area where they are less concentrated.
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| Facilitated diffusion | Process of diffusion in which molecules pass across the membrane through cell membrane channels.
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| Aquaporin | Water channel protein in a cell.
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| Osmosis | Diffusion of water through a selectively permeable membrane.
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| Isotonic | When the concentration of two solutions is the same.
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| Hypertonic | When comparing two solutions, the solution with the greater concentration of solutes.
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| Hypotonic | When comparing two solutions, the solution with the lesser concentration of solutes.
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| Osmotic Pressure | Pressure that must be applied to prevent osmotic movement across a selectively permeable membrane.
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| Homeostasis | Relatively constant internal physical and chemical conditions that organisms maintain.
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| Tissue | Group of similar cells that perform a particular function.
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| Organ | Group of tissues that work together to perform closely related functions.
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| Organ System | Group of organs that work together to perform a specific function.
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| Receptor | on or in a cell. a specific protein to whose shape fits that of a specific molecular messenger, such as a hormone.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
rhacker
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