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Stack #4542200
bio practicle
| Term | Definition |
|---|---|
| a common negative control | water |
| protein test | biuret (Na OH, cuso4) |
| glucose test | benidicts test |
| starch test | iodine test |
| Postive protein test color | purple |
| positive glucose test color | red/orange |
| postitive starch test | orange |
| benidicts reagent in its oxidized form (blue) reactions with free aldehyde group of mono and disssacharides to get... | reduced (red or orange) |
| explain the process of polymerization | the process where large or long chains of monomers link together to form a polymer |
| if starch is a carbo, why is its presense not detected by the benedicts test? | benedicts test detects reducing sugars, not polysaccharides like starches |
| what substance exibits hydrophobic behavior, why? | lipids, they are mostly nonpolar due to their molecular structure, they are insoluluable because of its nonpolar lipid bilayers. |
| carbohydrate linkage | glycosidic bond |
| carbohydrate complex linkage | glycosidic bond |
| protein linkage | peptides |
| fat linkage | esterbond |
| receptors determine | chemical signaling |
| proteins are | transport molecules |
| EXAMPLE, distilled water, inital mass 5.0, final mass 6.2 | hypotonic |
| EXAMPLE 15 percent sucarose, 5.0 mass, 5.0 final mass | isotonic |
| explain why Hydrochlroic acid can travel faster than food coloring | hydrocloric acid has a lower molecular weight causing it to diffuse faster then food coloring with a higher molecular weight |
| diffusion is faster in a liquid because | diffusion moves from a rate of higher contration to lower concentration |
| Fluid Mosaic Model | describes the cell membrane as a mosaic of several types of molecules |
| Peripheral (extrinsic) proteins are... | primarily receptors |
| Cholesterol, | maintains structure and fluidity |
| Integral (intrinsic) proteins are | channel proteins |
| membrane functions | cell barriers, organelle function, regulated movement of molecules |
| The movement or transport of molecules along the concentration gradient | Diffusion |
| Tonicity: | The concentration of a solution as compared to another solution |
| PLASMOLYSIS is the | shrinking of the cell membrane away from the cell wall because of lose of water |
| Percent solution | The amount (grams) or of chemical or compound (solute) per 100ml of a solution (solvent) |
| heiarchy of life | atoms, molecules, macromolecules, cells |
| polymers are made up of | MONOMERS (building blocks) with Carbon backbone |
| Monomers are linked together by removing water | Dehydration reaction) to produce POLYMERS |
| macromolecules | Proteins 3. Lipids (fats) 4. Nucleic Acids carbs |
| the building blocks of carbs are | dissacharides and monosaccarides |
| All monosaccharides and some disaccharides act as reducing agent because of their | free Aldehyde or Ketone functional group |
| functional group of proteins | carboxyl, amino acids |
| bilding blocks of lipids | fatty acids and glycerol |
| detection of fats | hydrophobic test |
| Electron Microscope are used for observing | extremely minute structures like viruses and cell details |
| prokaryotes | o nucleus 2. Smaller in size 3. No membrane bound cell- organelles 4. Genetic material is circular |
| Eukaryotes | Nucleus present 2. Bigger in size 3. Have membrane bound cell- organelles 4. Genetic material is linear |
| Animal and plants are both Eukaryotic thus have the following common cell organelles | ucleus • Mitochondria • Golgi apparatus • Endoplasmic reticulum • Vacuoles |
| what is the function of a flask | to measure ml of a specific fluid |
| if using a pipetee, expect it to be | .5 + or - |
| a student forgot to hear their benedicts test, can they conclude that no sugar is presnt | no, bc when heated the test will be positive not negative |
| describe the purpose of a control in a macromolecule test | a control gives a measurement compound to a non control group, for example water could be a control |
| what are the three componets of an amino acid | water, carboxyl group, peptide bond |
| when making a protein what type of bonds form between amino acids in the primary structure | a peptide bond |
| what are the componets ofa nucleic acid | base, phosphate, deoxyribose |
| independent variable is | manipulated |
| dependent variable is | measured |
Created by:
ecoesfeldd