Lactase is effective at pH 2 – 7 (including dH2O) and therefore breaks down the lactose sugar in milk into glucose and galactose. As a result, the test strips will turn a shade of brown. . Lactase is not effective at pH 10 – 12. At the high pHs, the enzyme lactase is denatured and is no longer able to break down the sugar lactose in milk.
Sugary- this is the 1 that people with diabetes should stay clear of, this is due to the “glucose getting into your bloodstream fast, this could cause a sudden rise in blood glucose levels”. (Rudy, 1999, Page 24)This is not saying that you cannot eat this kind of food; it just means that you should only eat it in small quantities. Starchy- this is the one that is okay for diabetics to eat “These foods increase the blood glucose even though they are not sweet in taste. The body digests them and breaks them down into glucose (sugar).
Osmosis/Egg Lab By: Nicole Dressen Problem to Solve: How the mass of an egg changes in different substances. Information Collected: A. Hypotonic: a substance with lower concentration when compared to another substance. B. Isotonic: when the concentration of two substances is the same. C. Hypertonic: a substance with more concentration when compared to another substance. Hypothesis: I think the mass of the egg that is in the water will stay the same but the mass of the egg that is in the sugar will increase mass.
The DNA strands are held together by hydrogen bonds. When you use heat to break the nuclear membrane, the heat can also break the hydrogen bonds. So you add the cold ethanol to keep the DNA strands together, and also DNA is non-soluble in ethanol, so it will precipitate out. (See "Extracting DNA from Strawberries Honors", provided by Ms.Morse, 2/21/12.) 2.
Purpose/ objectives: 1. To learn if food concentrations affect yeast activity 2. To improve skills in writing a lab report better 3. To practice measuring skills 4. To understand how yeast works Materials: * * 6 identical large test tubes (18 X 150mm) * 1 graduated cylinder (24ml) * Molasses stock solution ( 1:4- molasses: water) Dropper * Yeast suspension (1 gram of dry yeast in 100 mls water) * Aluminum foil * 1 test tube rack * 1 graduated cylinder (small) * 1 beaker * 6 small test tube (10 X 75mm) * Rule marked in millimeters Hypothesis: If you add more molasses to the yeast then the gas would became greater because the yeast cells reproduce so the waste became greater and
This will occur because the water and glucose are small enough to diffuse out of the pores in the dialysis bag, but the starch molecules are too large to fit through 2. If a solution is very hypertonic, then the most amount of water will diffuse across the semi-permeable membrane into the dialysis tubing. This occurs because the higher concentration of solute, the more water it takes to reach equilibrium, thus, the faster rate of osmosis. 3. If we place the potato in a sucrose solution with a similar solute concentration as a potato, then the least amount of water will diffuse into or out of the potato cells.
Wait, I'm SUPPOSED to eat chocolate before I take a test, because it's great, "brain food." I'm SUPPOSED to have lots of foods that are rich in iron to help my circulation. Hold on,
These tiny pits are contain perfect places for carbon dioxide bubbles to form. As soon as the Mentos hit the soda, bubbles form all over the surface of the candy. Problem: The problem in our experiment is which soda causes a faster reaction when mentos is added to it. Will it be diet Coke or regular Coke? Hypothesis: If think if we palace the mentos in the regular Coke, then it will have a faster and a higher eruption reaction because it contains more carbonates and sugar, rather than a diet Coke.
The salt in this experiment forces its way into the ice cube, therefore bonding with small particles of the ice molecules to raise the freezing point. Since the salt has a higher concentration then the ice causing the ice to dry and become hard to melt. The sugar intrudes the
We could even lower the cost of health care in the future as well. Unhealthy eating habits contribute to health problems such as diabetes, Madden 3 Obesity and heart problems. The eating habits that cause these problems are our negligence in every way and we must control them at all costs. We have to hold ourselves accountable rather than blaming some fast food place and take control of our lives. We can’t sue Wal Mart for selling us an unlimited amount of chocolates, so why can we consider suing due to the fact that we have consumed too many calories from a meal we purchased at some fast food establishment?