Abstract: For this experiment daphnia was used to experiment the effect of different substances on its heartbeat. We used daphnia because it has similarities to humans and we can't experiment using these substances with humans. The substances we used to conduct the experiment was adrenalin which was hypothesized in the beginning to increase the heart rate of daphnia and acetylcholine to decrease the heart rate of daphnia .Before we recorded the daphnia with any substance it was first recorded in its initial base pond water; this was our control. After we recorded the initial base we recorded the effect of different substances on the daphnia heart rate. The end results proved that the hypothesis supported the experiment, that adrenalin speeds up the heart rate of daphnia and acetylcholine slows down the heart beat rate in daphnia as it does in humans.
Conditions that must remain constant in this experiment include the temperature of the water baths and the volume of peas and beads in the respirometers. The general gas law states that if temperature and volume remain constant, then the pressure of the gas will change in proportion to the number of molecules of gas present. 2. Water moves into the respirometer pipettes because as oxygen is consumed by the peas, the pressure within the pipettes will decrease and thus the negative pressure will draw the water into the pipette. It is important to correct the readings from the peas because the glass beads are used as a control in which no changes should occur in CO2 and oxygen levels due to their abiotic nature.
BIOL1003 Methods: Lab 1: Cell Size and Structure THURSDAY Fall 2012 A Leica DME microscope was used for observations of Elodea canadensis, human cheek cell, Paramecium aurelia, Gonium sp., yeast and bacteria. A culture of the aquatic plant Elodea canadensis submerged in water was available in the lab. A single leaf was removed from a stalk and placed in a drop of distilled water on a slide. The preparation was covered with a coverslip and observed in the microscope. The preparation remained illuminated in the microscope for approximately five minutes.
The different kinds of Aspirin tablets are: * Enteric Coated Tablets * Capsules * Regular Tablets * Dissolving Tablets. Each tablet will be dissolves in both Water and Hydrochloric Acid (representing saliva and stomach acid respectively). Hypothesis The Enteric Coated tablet will remain undissolved in both water and Hydrochloric Acid as the coating is designed to remain undissolved until reaching the small intestine. The dissolving tablet will dissolve the fastest in both water and Hydrochloric Acid as this tablet is designed to quickly dissolve in liquid. The capsule will soften but not completely dissolve in the water, however will dissolve in the Hydrochloric Acid.
You want your LDL to be high and HDL to be low ("High cholesterol Definition - Diseases and Conditions - Mayo Clinic," 2014). The test we perform to check cholesterol levels will measure triglycerides, cholesterol, HDL, and LDL for a complete look at cholesterol ("Triglycerides: Why do they matter? - Mayo Clinic," 2012). Triglycerides are a type of fat or lipid that is found in your blood and can up your risk of heart disease. When you eat, your body automatically turns any calories it doesn’t currently need into triglycerides and stores it in your fat cells to use for energy in between meals.
It doesn't, it only leads to losing water weight. No fat loss. Two ways to deal with dehydration Move the dehydrated person to a cool area so he/she can cool down, put a cool cloth on his/her forehead. - Sip water slowly. If you drink too much water, your cells can expand and eventually burst, which can be dangerous.
Even though there is not one test that can diagnosis lupus but with every test that you take will help pin point the severity of the illness. Routine blood test are taken to check you complete blood count levels in lupus the blood tests are low. Urine test are taken because lupus attacks the kidneys. The most common urine tests look for cell casts which is bits of cells that normally would be removed when your blood is filtered through your kidneys, and proteinuria which is a protein being spilled into your body because your kidneys are not filtering the waste properly. Erythrocyte sedimentation rate are taken to determine the rate at which the red blood cells settle to the bottom of a tube in an hour.
Aim: To test the effect of change in pH, Temperature and substrate concentration on catalase in liver Hypothesis: we predict the enzyme will have its greatest reaction when it is in its optimum temperature, pH and substrate concentration Risk assessment: * Wear gloves when handling raw liver. * Be careful of glass and sharp objects such as scalpel. * Wear safety glasses when observing reaction. * Beware of boiling water and Bunsen burner * Alert your teacher to any spills or accidents * Handle Hydrogen peroxide with care All Materials: * Liver (100g) * Scalpel * 3x large beakers * Ruler * Bunsen burner * 1 molar hydrogen chloride- dropper bottle * Gauze mat * Thermometer * 14 x test tubes * Test tube holder * 1 molar Hydrogen peroxide- dropper bottle * Universal Indicator * pH colour chart * Water * Sodium hydroxide * 2x plastic gloves * Safety glasses * Ice (one large beaker full) Method: A) Testing the effects of Increased temperature 1. Gather the materials and set up all equipment 2.
Caffeine & Alcohol Effect on the Water Flea Heart Rate Abstract In this study, water fleas (Daphnia magna), a semi-transparent freshwater crustacean, are used to study the effects of caffeine and alcohol on heart rate. There was a control group used along with the alcohol and caffeine to ensure the results were more accurate. The prediction was the introduction of alcohol and each increased concentration of alcohol, would decrease heart rate and the introduction and subsequent increased concentrations of caffeine would increase heart rate. The results of this experiment proved the prediction to be correct with the alcohol, but the results from the caffeine were hardly noticeable. Methods & Materials
Doctors can recognize Cystic Fibrosis by testing the salt content of the sweat; it is much higher in people with the disease. A chest X-ray and tests of the lung function will usually be undertaken. If chest infections occur frequently, a sample of sputum (phlegm) will be analyzed for the presence of bacteria. When Cystic Fibrosis is detected the patient has many treatment options. The overall aims of treatments are to treat infections, keep the lungs clean and free of sputum, maintain adequate nutrition, and to improve