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Stack #25090
bio 102 dacc
| Question | Answer |
|---|---|
| magnification | defined as the relative enlargment of the specimen when seen through the microscope |
| transmission electron | microscope would allow you to see viruses |
| resolution | how close two lines can be together and still be seen as 2 lines |
| magnification | increase |
| virus | can be seen with electron microscope |
| small bacteria | can be seen by eletron microscope |
| eye piece | occular - view point, monocular magnification |
| body tube | transports image to eyepiece |
| coarse-adjustment knob | finds the image, specimens, and picture |
| revolving nosepiece | switch from one power or objective to another |
| objectives | primary magnifiers, most expensive parts of the microscope |
| stage | supports the slide |
| diaphragm | controls amount of light |
| stage clips | holds the slide in position |
| light source | light switch |
| fine-adjustment knob | sharp adjustment once you have found the image for sharper image |
| condensor | focuses the light onto specimen, dome shaped piece of glass, the specimen must be bought ot the light because it is non-adjustable |
| 10x objective | storage of the compound light microscope |
| angstrom | one-tenth of a millimicron, used to measure a wavelenth of light. |
| centimeter | one-hundreth of a meter, one-tenth of a decimeter |
| decimeter | 1/10th of a meter |
| meter | the basic metric unit of length |
| microscopy | technique of using a microscope to observe structures or parts that can not be seen by the naked eye |
| millimeter | 1/1000th of a meter or 1/10 of a centimeter |
| millimicron | 1/1000th of a micron |
| amino acid | a building bloc of proteins |
| amino group | chemical group consisting of fa nitrogen atom and two hydrogen atoms. An amino acid has at least one amino group |
| anticodon | a set of bases on tRNA molecules that matches a set of bases (codon) on mRNA molecules |
| atoms | the smallest particles of of an element that retain the porperties characterizing the element: atoms of the ssame elemnts have edentical physical and chemical properties |
| bases | nitrogen-containing chemical groups that are one to the components of DNA and RNA |
| carbohydrate | an organic molevule made up of carbo, hydgogen, and oxygen in which the ratio of hydrogen to oygen is 2 to 1 |
| carboxyl group | a chemical group made up of an atom of carbon, two atoms of oxygen, and an atom hydrogen; representd as COOH |
| chemical bond | means by which chemical elements are joined together; involves electron sharing, or the giving and taking of electrons. |
| codon | 3 consecutive bases that act together on mRNA molecules to spevify one amino acid in a protein chain. |
| dipeptide | a two-amino acid molecule. |
| DNA | the molecule responsible for preserving all hereditary information of aliving cell; composed of individual nucleotides arranged in a double-stranded helix or poral |
| electron | non-nuclear, negatively charged particle that forms a part of all atoms. |
| elements | basic substances that can't by any sort of chemical method, be broken apart into simpler substances |
| enzyme | a protein substance that controls a specific reaction in living organisms without being consumed or altered in the reaction |
| fat | an organic molecule responsible for providing a long-term souce of energy. All fats have on glycero molcule with three fatty acids attached to it. |
| fatty acid | one of the components of a fat; responsible for the variation between the kinds of fats. |
| glycerol | the basic structural molecule of a fat. this molecule is the same in every fat. |
| hydrolysis | the process of breaking up complex molecules in a cell through the action of enzymes & water; water is added in the process |
| hydroxyl group | a chemical group consisting of an oxygen atom and a hydrogen atom. |
| mRNA | a segment of RNA that carries information from DNA into the area of the cell where protein synthesis will occur. it is the codon that spwcifies how tranfer RNA molecules are to align themselves. |
| phosphate group | a chemical group containing phosphorus, which is one of the structural components of nucleotide. Nucleotides join together to form DNA and RNA molecules. |
| protein | a basic structural molecule found in all forms of life; made up of a long chain of amino acids. enzymes are proteins |
| ribosomes | cellular structures that accomplish protein synthesis in the cell in conjuntion with messenger and transfer RNA |
| RNA | a nucleic acid taht occurs in various forms, including messenger, transfer, and ribosomal; all three forms of RNA are involved with proteinsynthesis. As with DNA, RNA is single-stranded. |
| biuret test for proteins | chemical test which is used to detect the presence of protein molecules. Positive test, produce a violet to purple color after adding the test reagents |
| benedict's test for simple sugars | used to determine if small carbohydrate molecules are present in a solution ; test is indicated when areddish colred precipitate is formed after adding the test reagents and heatin. |
| cell | the basic unit of life |
| vacuole | storage of liquids, gases |
| mitochondria | powerhouse; production of enery; an organelle in which cellular respiration occurs. |
| plasma membrane | regulates what gets in and out; also known as cell membrane; surrounds cytoplasm of the cell |
| golgi apperatus | pancke stack, makes secretions |
| ;ribsomes | systhesize protein; found in the the cytoplasm of the cell |
| rought ER | makes protein that will be taken somewhere else |
| lysome | intra cellular digestion. takes in bacteria,located in animal cells, contains enzymes that break down worn-out cell parts and possibly whole cells |
| all cells | have a membrane |
| plants have | cell walls , chloroplasts, vacuoles (lrg), ribosomes |
| cells have | true lysosome, cetrioles, cilia, ribosomes |
| cytology | cell study |
| grana | dark stack of pennies: light reaction where photosythesis takes place. |
| stroma | dark reation takes place, suar is made |
Created by:
jcrew0319
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