Bubble Quality Lab Hypothesis: The sugar solution will produce the best quality bubbles because of it’s sticky texture. Procedure: First‚ three cups were labeled as #1‚ #2‚ and #3. Next‚ each cup had one teaspoon of dish detergent and ⅔ cup of water added to them and swirled around to have everything mixed. Cup #2 then had half a teaspoon of table sugar added and cup #3 had half a teaspoon of table salt added to them. After that‚ a straw was dipped into each solution separately‚ and blown through
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Spencer Richardson Biology 111 Lab 7 Tube Initial Gas Height(mm) Final Gas Height(mm) Net Change 1 .5 .7 + .2 2 .5 .2 -.3 3 .5 .7 + .5 4 .5 1.0 +.5 5 .5 .5 0 1. The clinical formula of Equal was not metabolized because it has no sugar. Splenda is actually derived from sugar so the results would be different. 2. Carbon Dioxide was the gas that was produced. Two methods would be by examining the bottom of the tube and to measure the net difference. 3. The
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Lab 34b Cardiovascular Physiology 1. What was the baseline heart rate for the frog? 59-63 bpm 2. Which wave is larger‚ the one for atrial contraction or the one for ventricular contraction? Why? Ventricular. It shows the strength of the ventricle as it pumps blood‚ and it is a thicker muscle to pump stronger as it contracts 3. At what time during the contraction cycle was it possible to induce an extrasystole? The time during the relaxation part of cardiac cycle. 4. By clicking the Multiple
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ten seeds in each of the Petri dishes‚ filled them with enough water and placed lids on them. Then we labeled the dishes as part of either the variable group or control group. The two dishes for the control group were placed on a shelf in the biology lab at a temperature of 68 degrees. The other two dishes were placed inside the refrigerator. All four of the dishes were left in their respective places over the weekend. After‚ the seeds in all four of the Petri dishes were taken out and measured for
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that may expose you to splashes or sprays of blood or body fluids 2. Why should you consider a body fluid capable of infecting you with disease? o I think you should be aware and alert because its precaution to practice when youre working in a lab setting. 3. Describe how to dispose of waste material contaminated with body fluids. o You should dispose all waste material in the correct disposal area‚ and you can throw away the waste materials in the biohazard container. 4. Explain how to
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Lab 1: Microscopy and the Metric System Part A: 1. List the components of the compound microscope and their function. 2. determine the total magnification given that you are using a compound microscope with the following objectives: 4x‚ 10x‚ 40x‚ and 100x 3. what is meant by the depth of field? 4. what is meant by the field of view? 5. describe the process of making a wet mount. ________________________________________________________________________________ 1. -Focal adjustment; used
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Determining the Melting Point of a Substance Purpose The purpose of this lab is to determine the melting point of the substances naphthalene‚ biphenyl and a mixture of C. Data/Observation Sample | Melting Point Range (°C) | | Accurate trialStart Done | Naphthalene | 81 | 85 | Biphenyl | 71 | 73 | Mixture C | 42 | 56 | Questions: 1. The effect of the impurity on the mixture caused the melting point of the mixture to be lowered. 2
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structures. However‚ this means that once the structure of the enzyme is denatured and changed‚ the functions will most probably modify as well. In nature‚ this happens when the temperature and concentrations of different components are altered. In this lab experiment‚ we will be doing an in-depth research of exactly what happens to the enzymes‚ when it happens‚ and why it denatures the way it does. b. Hypothesis Materials and Methods a. Materials 50ml beaker of fresh potato catalase Reaction
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PEES 4200W- Physiology of Exercise Lab #2: Metabolism and Energy Expenditure 1. The Respiratory exchange ratio is the ratio of the volume of carbon dioxide produced and oxygen consumed. The ratio indicates the energy that the subject is expending for indirect calorimetry‚ how efficient the subject ’s body is at utilizing the oxygen inhaled‚ as well as the main substrate being used for energy during varying intensities of exercise. During rest the volume of carbon dioxide was 0.73L/min‚ the volume
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Repeat this procedure for 10‚ 15‚ and 20 g added to the weight hanger. 6. To determine the force‚ F‚ needed to displace the spring‚ measure each of the slotted masses‚ individually‚ then convert the sum of the added masses to a weight in dynes (see lab manual for conversion). 7. The extension of the spring‚ x‚ is found by subtracting the vertical scale reading in each case from the equilibrium position reading. 8. Plot a graph with the added weight‚ F‚ on the vertical axis and the extension
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