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1. What is the effect of increasing the concentration of lactose in the action of the enzyme lactase? Why does this happen?
2. What happens to the glucose concentration when the pH of the solution decreased? What happened when the pH was increased?
3. Why is the glucose concentration 0 when the temperature of the solution was at 0 degrees Celsius?
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- 1. What percent of the total body water is contained within the interstitial fluid? Round your answer to nearest whole number, do not report a decimal (35 not 35.0), do not put the % symbol after the number 2. Identify the analogous protein molecule to a carbohydrate monosaccharide. 3. Identify a chemical reaction type that is both anabolic and endergonic.4. What is the region/point where AA is predominantly present as a (-2)-charged species?5. The effective buffering range for the amino acid in the acidic region is?6. What is the region/point where the solution has a 50:50 percent mixture of the (0) and the (-1) species?15. Some molecules that are covalently bonded do not have a difference in charge across the mol- ecule. These molecules are referred to as nonpolar. What arrangement of electrons would result in a nonpolar molecule? 16. Some examples of nonpolar molecules include fats, oils, and waxes. How do these substances interact with water? 17. What prediction would you make about why oil and water interact in the way described above?
- 1. As milk ages, bacteria that produce lactic acid increase in number. What will that do to the pH of the milk? 2. when acid was added to milk it got thick and clumped up, Would adding a base have a similar effect? Explain2. Nitrogenous waste in the form of ammonia is a byproduct generated during amino acid metabolism that will build up to toxic levels unless it is removed. In organisms including mammals - known as ureotelic organisms – ammonia is converted to urea for safe storage and excretion. As far as carbon usage is concerned, urea is an efficient means by which to remove excess nitrogen, since two nitrogen atoms can be removed using only a single carbon. (a) In ureotelic organisms, which organ produces the most urea and which organ collects and excretes it? How many reversible and irreversible reactions are in the urea cycle? (b) In which cellular compartment do each of the reactions of the urea cycle take place, and which metabolites are transported between cellular compartments? (c) One molecule of urea contains two nitrogen groups. How do each of these nitrogen groups enter the urea cycle? What are the precursors, intermediates and products of each of these nitrogen-acquir- ing reactions?The diffusion of substances within a solution tends to move those substances ________ their ________ gradient. up; electrical up; electrochemical down; pressure down; concentration
- 2. What is the chemical reaction for this process? Fill in the blanks below: C6H12O6 + yeast + H₂O (water) 3. Circle the REACTANTS of the chemical reaction. + 2C₂H5OH (ethyl alcohol) + ATP water ethanol glucose carbon dioxide 4. Circle the PRODUCTS of the chemical reaction. water ethanol glucose carbon dioxide yeast yeast ATP ATP7. During amino acid catabolism, how is amino group removed and excreted in the form of urea? Please write the reactions starting from a generic amino acid to the formation of urea. Please indicate the names of enzymes, cofactors, names of substrates, and products of each reaction and the location of the reaction i.e. whether in cytoplasm or mitochondria.2. How does pH affect enzyme function? 1. pH level has no effect on enzyme function 2. A very high pH increases enzyme function 3. A very low pH decreases enzyme function 4. A specific pH range is required for an enzyme to function answer Why do you believe this is the correct answer?
- 4. What is the total charge of lysine in the strong acidic medium? A) +2 B) -2 C) +1 D) 0 E) -1 5. Essential amino acids are:3. Diet Big Red soda contains citric acid, as shown in the ingredient list below, Carbonated Water, Citric Acid, Natural and Artificial Flavors, Sucralose, Sodium Benzoate, Caffeine, Malic Acid, Red 40, Acesulfame Potassium, Phosphoric Acid, and Acacia Gum What are two obvious reasons that we did not try to determine the citric acid content in a "flat" sample of Diet Big Red soda?5. Arrange the following fatty acids in order from lowest melting point to highest: myristic acid, arachidonic acid, linolenic acid, stearic acid, oleic acid. What do the highest have in common? What do the lowest have in common? 6. There are a wide range of oils and fats used in the culinary arts. Arrange the following in order from least saturated to most saturated: corn oil, lard, butter, canola oil, olive oil, coconut oil.