At the high pHs, the enzyme lactase is denatured and is no longer able to break down the sugar lactose in milk. Therefore, no glucose is present and the test strips remain blue. . The optimum range for the activity of lactase would be considered pH 2-7. The water control tube should match the tube with a
Melissa Quibin | Zaira Ruiz | Ciarra Valencia | Lea Valencia FST 101 | ST-2L | Group 4 EXERCISE NO. 9 VITAMINS Introduction Vitamins are minor but essential organic substances in human nutrition. Though they provide no amount of energy, they are required for the normal growth, maintenance and functioning of the human body. They are important constituents in considering quality aspects of food quality. Vitamin losses can occur through chemical reactions which lead to inactive products.
This allows your body to pass starch through without turning it into glucose. Without starch, fat cannot be stored in the form of carbohydrates and less weight will be gained. This may sound too good to be true. Though carb-cutter does actually block amylase, there are many other factors that go into the breakdown of the carbohydrates. Students at the University of Georgia have taken it upon them to test this rumor and see if carb-cutter really stops the breakdown of starch to helps weight loss.
Exploring enzymes through Lactex. Problem: Does pH affect the results of Lactex? Independent Variable: pH value Dependent Variable: Glucose Control: Lactex enzyme Hypothesis: I think pH will cause the result of Lactex to change. Materials: · Soap (basic) · Antacid (basic) · Soda (acidic) · Vinegar (acidic) · pH test strips · eye dropper · Cow’s milk Experimental Design: 1. Set up plastic cups 2.
There are some exceptions like Pepsin, a Digestive Enzyme which has a Ph of 2, which is found in the stomach of humans. In contrast, Trypsin is a digestive enzyme that works in the small intestines where the environment is much less acidic. Its Ph optimum is Ph 8. Environmental conditions are important in enzymatic reactions because temputure, ph, and chemicals that influence enzymes can influence them. Enzymes are practically or completely denatured if the ph is changed from the optimum Ph.
The oil later added simply stayed in the middle between the liquid and the suds at the top. Analysis: 1. The substance MSG is water soluble, it completely dissolved when added to water, but was not soluble in alcohol. 2. Vegetable oil is hydrophobic and there for is not water soluble but alcohol on the other hand is completely soluble with vegetable oil.
Brendan Dennis 2/24/13 CP Biology Enzymes Used vs. Amount of Apple Juice Produced Lab Report Title: Enzymes Used vs. Amount of Apple Juice Produced Problem: How does a change in the enzymes used affect the amount of apple juice produced? Hypothesis: If different enzymes, such as pectinase and cellulase, are used to break down apple sauce, then the most apple juice will be produced when 5 drops of both pectinase and cellulase are used in one mixture because the two enzymes will be working together to break down the apple juice. Procedure: 1.
Plant Pigments Depending on Photosynthesis. Is the rate of photosynthesis faster when there are extreme light and temperatures present? Paper chromatography is a technique used for separating and identifying pigments. The solvent DPIP, (2, 6-dichlorophenol-indophenol), which is often used to substitute for NADPH, moves up the paper by capillary action. As the solvent moves up the paper, it carries along any substances dissolved in it, which are the pigments.
Explain this statement: “This failure of prevention occurs in the face of a decrease in smoking and reduction b. In dietary fat.” That if you want the diets to work and have everything turn out right you need to start with decrease smoking and not eat as many fats in your diet 8. Dean Ornish recommends a very low-fat diet along with what other components? Exercise, lose weight, Meditate 9. How does this make the Ornish diet scientifically invalid There is no evidence that shows that olive oil is bad for you, and the only cholesterol olive oil will raise your good HDL cholesterol.
Stevia is all-natural and comes from a plant, unlike artificial sweeteners. Pure stevia leaves almost no accumulation of the substance behind as it's metabolized, and therefore adds no calories to your diet. Researchers concluded that using stevia instead of table sugar on your diet might be an effective strategy to manage food