negatively charged DNA backbone‚ creating a DNA molecule with a neutral charge. When a cold polar solvent‚ like ethanol‚ is added to the DNA solution‚ the DNA is precipitated out of solution‚ leaving other cell components behind (proteins‚ lipids‚ polysaccharides‚ general cell debris). DNA can be isolated and precipitated using tissue from an onion. The cells are disrupted by manually chopping the onion into small bits‚ adding homogenization medium to the onion bits (a solution of dish detergent and salts)
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What are the “building blocks” of each molecule? For example‚ protein = Amino Acid. 1. carbohydrates: organic molecule with a carbon/hydrogen/oxygen ratio of about 1:2:1‚ including sugars and starches. EX: monosaccharides‚ disaccharides‚ polysaccharides 2. Lipids:
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Although your Original Medicare will not cover everything‚ Medicare Part B covers both installments of the pneumonia vaccine. To attain benefits that are not included in your Original Medicare Plans‚ you may want to purchase a Medicare Advantage Plan (Medicare Part C). Medicare Advantage Plans Medicare Advantage Plans offer the same benefits as the Original Medicare Plan‚ (minus the long-term/custodial care; however‚ that care is still covered under Part A of your Medicare Plan). Medicare Advantage
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having a specific function in the cell. The organelles are by membranes divided in proficient sections .The plant cell is made up of a rigid thick wall. Cell walls protect cells and help maintain their shape. The cell walls of the plant contain polysaccharide cellulose. An important organelle found in plant cells but not animals‚ is the chloroplast‚ where photosynthesis takes place. Plant cells also have a large central vacuole a compartment that store water and chemicals. 2. I hypothesize as the
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jellyfish are 99% (hence the transparency). It plays vital roles in the metabolism of all cells and in photosynthesis (providing raw materials) in plant cells. In all cells water is used for; hydrolysis‚ the breakdown of a substance by water‚ e.g. polysaccharides to monosaccharides‚ forming a glycosidic bond; a medium for chemical reactions‚ due to its properties as a solvent; the diffusion and osmosis of substances‚ e.g. gaseous exchange‚ which need to be moist as the exchange takes place in solution
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The scientific Method 1. Scientific Method- scientific investigation involving the observation of phenomena‚ the formulation of a hypothesis concerning the phenomena‚ experimentation to demonstrate the truth or falseness of the hypothesis‚ and result that validates or modify the hypothesis. Mechanist- Has belief that only natural forces govern living things‚ along with the rest of the universe. Vitalist- believes that the universe is at least partially governed by supernatural powers. Cause
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* He was born in Germany on December 11‚ 1843. * Koch decided to change his area of study to medicine from natural science‚ as he aspired to be a physician. * In July of 1867‚ following his graduation from medical school‚ Koch married Emma Adolfine Josephine Fraatz‚ and the two had a daughter‚ Gertrude‚ in 1868 * After his graduation in 1866‚ he worked as a surgeon in‚ and following his service‚ worked as a physician in what today is known as Wolsztyn‚ Poland the Franco-Prussian War
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Materials • Samples of different types of milk • Benedict’s Reagent • Biuret Reagent • Sudan III • Water bath • Pipettes/syringes • Test tubes • Microscopic slides and cover slips • Microscope Method (testing for reducing sugars) 1. Add 3cm³ of whole milk‚ by using a pipette or syringe to the test tube. 2. Add 5cm³ of Benedict’s reagent and place it in the boiling water bath for 8 minutes. Do the same for semi-skimmed milk and skimmed milk. 3. Once all 3 of the test tubes are
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Immunity(5 MCQS) Immune system and define its components: - Antigen - Antibody (structure of antibody) - Lymphocytes (B and T cells) What is cell mediated response and humoral immune response? Types of Immunity: - Active immunity - Passive immunity What do you mean by vaccination? 1) The humoral immunity defends mostly against viruses and bacteria throgh a) Skin b) Digestive system c) Body fluids d) Internal organ 2) Which of the following is effective against viral infections
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Mystery bacterium I would not say science is storybook fun‚ but who knew it become a mystery. Trying to find out what was in our number seven vial would become a battle we were willing to take on. As I began the test of deciding if our little bacteria friend was gram positive or negative‚ Jordan my science teammate‚ was putting together a smear plate. In as little as ten minutes we had discovered by the pink oval shapes we were observing‚ our microbe friend was a gram negative rod. We had narrowed
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