Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chapter 7 Vocabulary
| Term | Definition |
|---|---|
| cell | the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic. |
| cell theory | the theory that cells form the fundamental structural and functional units of all living organisms |
| compound light microscope | A microscope is an instrument used to see objects that are too small for the naked eye. |
| electron microscope | a microscope with high magnification and resolution, employing electron beams in place of light and using electron lenses. |
| eukaryote | an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus |
| nucleus | the central and most important part of an object, movement, or group, forming the basis for its activity and growth. |
| organelle | any of a number of organized or specialized structures within a living cell. |
| prokaryote | a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles |
| fluid mosaic model | The 'cell membrane' is a biological membrane that separates the interior of all cells from the outside environment. |
| phospholipid | a lipid containing a phosphate group in its molecule, e.g., lecithin. |
| plasma membrane | a microscopic membrane of lipids and proteins that forms the external boundary of the cytoplasm of a cell or encloses a vacuole, and that regulates the passage of molecules in and out of the cytoplasm |
| selective permeability | A semipermeable membrane, also termed a selectively permeable membrane, a partially permeable membrane or a differentially permeable membrane, is a membrane that will allow certain molecules or ions to pass through it by diffusion |
| transport proteins | A transport protein is a protein which serves the function of moving other materials within an organism. |
| cell wall | a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria |
| chlorophyll | a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis |
| chloroplast | a plastid that contains chlorophyll and in which photosynthesis takes place. |
| chromatin | the material of which the chromosomes of organisms other than bacteria (i.e., eukaryotes) are composed. It consists of protein, RNA, and DNA. |
| cilia | plural form of cilium. |
| cytoplasm | the material or protoplasm within a living cell, excluding the nucleus. |
| cytoskeleton | a microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence. |
| endoplasmic reticulum | a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane |
| flagella | a slender threadlike structure, esp. a microscopic whiplike appendage that enables many protozoa, bacteria, spermatozoa, etc., to swim. |
| Golgi apparatus | a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport. |
| lysosome | an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane. |
| microfilament | a small rodlike structure, about 4–7 nanometers in diameter, present in numbers in the cytoplasm of many eukaryotic cells. |
| microtubule | a microscopic tubular structure present in numbers in the cytoplasm of cells, sometimes aggregating to form more complex structures. |
| mitochondria | an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. |
| nucleolus | a small dense spherical structure in the nucleus of a cell during interphase. |
| plastid | any of a class of small organelles, such as chloroplasts, in the cytoplasm of plant cells, containing pigment or food. |
| ribosome | a minute particle consisting of RNA and associated proteins, found in large numbers in the cytoplasm of living cells. |
| vacuole | a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid. |
Created by:
Rj Jackson
Popular Biology sets