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a required reactant in the hydrolysis reaction of lactose.

Lactose and Lactase Reaction

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Diagram and describe the lactose and lactase reaction

We experimented by boiling the lactase for five, ten, and fifteen minutes. Thirty minutes worked for us. We suggest that you try boiling the enzyme before the lab, adding some milk (source of lactose) and test for glucose. If glucose is present, boil the lactase for a longer period of time.

Why did the enzyme react to lactose but not to sucrose

The ATP molecule contains linkages (bonds formed whentwo phosphate units are combined together) that release energy whenneeded. ATP can undergo hydrolysis in two ways: the removal ofterminal phosphate to form (ADP) andinorganic phosphate, or the removal of a terminal diphosphate toyield (AMP)and . The latter is usuallycleaved further to yield two phosphates. This results inbiosynthesis reactions, which do not occur alone, that can bedriven in the direction of synthesis when the phosphate bonds haveundergone hydrolysis.

dehydration synthesis reaction.

In a dehydration synthesis reaction between two un-ionized monomers, ..

Pregnancy and lactation represent periods when both energy and nutrient demands are high. For pregnancy, a diet should provide sufficient calories for adequate weight gain (National Research Council 1989). The calories and nutrients needed to maximally support pregnancy and lactation for as long as several years during multiple pregnancies and lengthy lactation periods can be obtained from a diet that includes the basic food groups. Other recommendations for both pregnant and lactating women include selecting a variety of foods from each food group, consuming regular meals and snacks, and including ample dietary fibre and fluid. Alcoholic beverages should be avoided or at least markedly restricted by pregnant and lactating women. Salt to taste is also recommended for pregnant women. An adequate diet during pregnancy and lactation is essential to assure normal foetal and infant growth and development and maternal health and well-being, and should be emphasized in worksite nutrition education programmes and catering facilities.

An adequate calcium intake is important throughout life to build a strong skeleton and achieve a maximum peak bone mass (bone mass peaks between the ages of 18 and 30) and help retard age-associated bone mass loss that often leads to osteoporosis. At least 800 milligrams of calcium daily is recommended from age one year through old age. For adolescents, when bones are growing rapidly, 1,200 milligrams of calcium per day are recommended. Some authorities believe that young adults, postmenopausal women and men over 65 years of age need 1,500 milligrams of calcium per day and that the diet of all other adults should provide 1,000 milligrams. Pregnant and lactating women need 1,200 milligrams of calcium per day. Dairy products are rich sources of calcium. Low fat dairy products are recommended to control blood cholesterol levels.

Why doesn't Benedict's solution react to lactose + lactase

Dehydration synthesis reaction are involved in the breakdown of ..

· Diet. If adequate amounts of calcium and vitamin D are not present in the diet, supplementation is recommended. This is particularly important for people with lactose intolerance who tend to avoid milk and milk products, the major sources of dietary calcium, and is most effective if maintained from childhood until the thirties as peak bone density is being achieved. Calcium carbonate, the most commonly used form of calcium supplementation, frequently causes side effects such as constipation, rebound hyperacidity, abdominal bloating and other gastrointestinal symptoms. Accordingly, many people substitute preparations of calcium citrate which, despite a significantly lower content of elemental calcium, is better absorbed and has fewer side-effects. The amounts of vitamin D present in the usual multivitamin preparation suffice for slowing the bone loss of osteoporosis. Women should be cautioned against excessive doses, which may lead to hypervitaminosis D, a syndrome that includes acute renal failure and increased resorption of bone.

This lab will examine the specificity of an enzyme (lactase) to a specific substrate (lactose). Students will observe the actions of the enzyme and how shape is important to enzyme reactions.

a lack of dehydration synthesis of lactose.
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