Sucrose will be also used in the labs. Sucrose is a normal table sugar and is also a disaccharide composed of fructose and glucose. Although lactose is similar to sucrose, the enzyme lactase will only break down only it’s substrate, lactose, because of the shape of the sugar. Objectives/ Introduction Enzymes are protein molecules that speed up a chemical reaction. Enzymes are specific; they only work with certain substrates.
When alcohol is consumed it quickly enters the bloodstream and is distributed to all major organs in the body, such as the heart, brain, liver, pancreas, kidney, etc. Unlike caffeine, alcohol is not a stimulant but a depressant. Alcohol consumption can lead to coma and death. (Gervasi, 2010) It is suggested to use Daphnia magna Straus as a biotest object for the evaluation of heart rate (HR) as a functional parameter. (Eksp Klin Farmakol) According to The Scientific Method II (C.Gervasi-2010), as a crustacean, the daphnia is closely related to freshwater and brine shrimp, and more distantly related to a crab and lobster.
Clostridium botulinum is a Gram-positive, anaerobic rod-shaped organism often found in the soil and in sediments of lakes and oceans (4, 5). It prefers a low oxygen environment, and is capable of forming spores that can lay dormant until it finds a proper environment to grow (2). C. botulinum produces seven extremely potent neurotoxins (classified by letters A through G) – but according to the CDC only serotypes A, B, E and F are harmful to humans (2). These toxins enter the bloodstream and are capable of inhibiting the release of acetylcholine at the neuromuscular junction, preventing muscle contraction and lead to paralysis and eventually death (5, 7). There are four natural forms of botulism: food borne, infant, wound, and adult intestinal colonization (1).
| The variables must be controlled so the experiment is a fair test otherwise the experiment is not accurate. | 3.2 Equipment list -2m Hydrochloric Acid - 100mL beaker - Mylanta tablet -Stopwatch - Water - Bunsen burner -Gas -Tongs -Matches (light Bunsen burner) -Tongs 3.3 Safety Assessment See Risk Assessment sheet for safety hazards 3.4 Method - 20mL of Hydrochloric Acid was poured into a beaker - The 1st tablet was placed into the HCL and the time from star to finish
The bacterial inhibitors in the experiment that were chosen were, an antiseptic, (hydrogen peroxide), a disinfectant (ammonia), and an antibiotic (tetracycline). The hypothesis stated that the ammonia with have the largest zone of inhibition because it is a strong disinfectant and will kill most of the bacteria. A disinfectant is made for killing bacteria on surfaces. Materials and Methods: To start the experiment swab bacteria from and existing petri dish. Next, take the cotton swab and drag it lightly in a zigzag motion across the agar on the petri dish; this is called streaking.
During his research, he reacted ethylene with (chlorine) CL2, and noticed the toxic effects it had on his own skin. Mustard agents are potentially deadly chemical agents that attack the skin and eyes—and one of the best known and most potent chemical weapons. Other names for mustard are H, sulfur mustard, and nitrogen mustard, which are used in the chemotherapy treatment of cancer patients. The name mustard gas is more widely used. Because of the impure quality of the agent, it is said to have an odor similar to that of mustard, garlic, or horseradish.
The experiment that I have undertaken is an enzyme lab that will be testing the reaction speeds of the enzyme catalase in different concentrations of Hyodrogen Proxide (H2O2). This is so that we can see how our body breaks down H2O2, a poisonous chemical that, if left by itself in our body, would kill us. The experiment is based off the latter part of AP Biology Lab 2: Enzyme Catalysis by Bozeman Science, which in the beginning he explains how enzymes work, and later uses Catalase as an example. The specifics of the experiment will be based off http://www.biologycorner.com/worksheets/enzyme_lab.html. This experiment is important to do because we must understand the way enzymes work in our own body, and so would be important to medical researchers trying to see how different things affects the body.
You will observe in this experiment some of the characteristics of the alkaline earth metals discussed here and will write balanced equations for all reactions. Purpose: Investigate some reactions of some group 2 elements and gain some insights into the properties of these alkaline earth metals. Equipment: (pg 131) Materials: (p 132) Safety: • Avoid skill and contact with your skin • Tie back long hair • Wear safety goggles Procedure: (record all data in the observations and data section) Part A 1. Pour 5 ml of distilled water into a clean and dry test tube and put the test tube into on the test tube rack. Add a calcium turning to the water in the tube.
This involves no cooking, no microwaving, no processing, no genetically engineering, no using pesticides, or herbicides. The raw food diet works by first helping regulate the bodies’ enzymes. Enzymes control everything in our bodies from speech to hormone production, and raw food is full of enzymes. Enzymes help us to digest and metabolize the food we eat, and when we are getting good nutrient value from the food we eat, we are less likely to over eat. It also works because it is an alkaline diet, which means it helps remove acid wastes, or toxins from the body, many of which are found in our body fat.