carbs and lipids handout Spring 22 (1)

Calculate the molecular weight of a small protein if 5.90 g sample of this protein is dissolved in H₂O to make 563 mL of solution which has an osmotic pressure of 14.2 torr at 25°C. a) 1.53 x 10³ g/mol b) 1.37 x 104 g/mol e) 5.81 x 105 g/mol f) 9.74 x 106 g/mol g) 3.37 x 102 g/mol c) 7.23 x 10³ g/mol d) 3.54 x 105 g/mol

) In Chapter 8 (The Water Soluble Vitamins), section 8.1 (What are Vitamins) discusses  Absorption, Storage and Excretion of Vitamins, both water- and fat-soluble. How readily a vitamin can be absorbed and utilized by the body is called its bioavailability. Fat-soluble vitamins require _fat__in the diet for absorption while water soluble vitamins, which include all B vitamins and vitamin ______, dissolve in water and depend on energy-requiring transport systems or need to be bound to specific molecules in the GI tract in order to be absorbed in the small intestine. Once absorbed into the blood, vitamins must be transported to the cells, mostly by being bound to _________________________ for transport.  Fat soluble vitamins, which include vitamins ______, ________, _________ and _______ are incorporated into ___________________ for transport from the intestine. With the exception of vitamin B12, the water-soluble vitamins are easily excreted from the body in the urine. In contrast,…

Blood is drawn from a patient to measure their “cholesterol levels.”  What is measured by this test the concentration of cholesterol in the blood the concentration of cholesterol in the liver the concentration of lipoproteins in the blood the concentration of all lipids in the blood  the first time i put the concentration of cholesterol in the blood because that's what the answers on here said, but I got it wrong

Which vitamin(s) is/are water soluble? A. Vitamin EB. Vitamin DC. Vitamin K D. Vitamin B12

A 1 mL sample of glycogen was calculated to contain 21 µmol (micromole) glucose. To 1 mL of this sample was added 2 mL of 2 M HCl. It was then hydrolysed by boiling the solution for 15 minutes. After boiling the hydrolysate was cooled and made up with H2O to a final volume of exactly 10 mL. The glucose was measured in this solution and found to have a concentration of 340 µg/mL (microgram/milliliter). i) Calculate the mass (mg) of glucose in the 10 mL of hydrolysate. As the 1 mL of glycogen sample was made up to a final volume of 10 mL, this mass of glucose was produced by the hydrolysis of the original 1 mL glycogen sample. ii) Calculate the amount (µmol) of glucose produced by the hydrolysis of the glycogen sample. iii) Calculate the purity of the glycogen used in the sample as % Purity = (moles of measured glucose/ moles of calculated glucose in glycogen) *100 iv) state your answer in a complete sentence. Show your working out such that the marker can easily understand it.…

Which statements accurately describe soap? Select one or more: Soaps are a mixture of fatty acid salts and glycerol. Soaps react with ions in hard water to create a precipitate. Soaps should be weakly alkaline in solution. aps work in solutions of any pH. Soaps are both hydrophobic and hydrophilic.

Which method would help Oliver to dissolve sugar in his tea faster? • letting the tea cool down before adding the sugar • using a sugar cube instead of granulated sugar • letting the sugar sit in the tea •

The dose makes the poison. Calculate the total volume of pure ethanol in just one Ethanol is highly toxic if it is consumed in large quantities. 23.5 fl. oz. (695 mL) can of American malt liquor, which is 12% volume per volume (v/v) ethanol. Although it is the second least toxic of the five alcohols discussed in this case, the ingestion of large quantities of Enter your answer in milliliters. ethanol is not safe. One serious problem with ethanol consumption is how the quantity is conveyed to the consumer. For example, American malt liquor can be sold pure ethanol: mL in 23.5 fl. oz. (695 mL) cans and is 12% volume per volume (v/v) ethanol. Although these cans are labeled as containing multiple servings, many young people consider one can to be a single serving. Drinking two cans of this beverage can result in an accidental overdose of ethanol. Two cans may not seem like much until you do the math.

In diluting acid solution, which of the following statements are correct?   I.    Add the acid into distilled water to dilute the acid solution II.   Add distilled water into acid to dilute the acid solution III.  Use serological pipette in transferring acid into a beaker containing distilled water IV.  Use serological pipette in transferring distilled water into a beaker containing acid     II and IV     I and IV     I and III     II and III

Concentration of Reagents (NH4)2S2O8 KI Na2S2O3 0.25 M 0.22 M 0.19 M Volumes of Solutions S₂082 (mL) Starch soln (mL) KNO3 (mL) EDTA soln (mL) KI (mL) S₂O32- (mL) x 5 9.7 0.9 26.4 0.5 9.9 1.1 Using the above data determine the concentration of I at the moment the reaction begins. HINT: This is a mixing problem. Determine the total number of moles of I and divide this amount by the total volume (in L). Be careful... If you go back and try this exercise again the values will change. Read the question carefully! Answer:

Imagine that you are making yourself a chocolate milk beverage, using cocoa powder. What could you do if you wanted the cocoa powder to dissolve quickly and well?

If a cow is pastured in an area that has been treated with pesticides such as DDT, these compounds can be detected in milk. In which of the three main milk components would you expect the DDT to be found? (Hint: think about the structure and polarity of the components of the milk, the structure and polarity of what we used to dissolve the various components of milk, and the structure and polarity of the pesticide compound, DDT)

23. A researcher wanted to use myoglobin as a substitute for hemoglobin to carry oxygen in a human body. Would this be successful? Why or why not? Use the graph below to help you answer your question. Fractional Saturation D.B 0.6 0.4 0.2 Mb 20 40 Hb 60 po, (tor) 80 100 3

10. Complete the following reaction. Then, indicate (by circling) whether the reactants and product are more soluble in water or in organic solvent. IF NO REACTION OCCURS, WRITE "NO REACTION." OH + NaOH water soluble water soluble water soluble organic soluble organic soluble organic soluble

Make a conclusion about the experiment of • water & baking soda • water & salt • water & sugar • water & powder detergent

14. What speeds up biological decomposition when added to wastewater or sludge being treated? 1. Digested sludge 2. Seed sludge 3. Waste activated sludge 4. Humus sludge

I'm stuck on part  d, e, f, and g. Please help

You are creating a standard curve for a protein experiment. You have to stock solution of BS a and would like to obtain dilutions. Explain how you would create a 1:1000 dilution of your protein stock solution.

1. Penicillin is hydrolyzed and thereby rendered inactive penicillinase, an enzyme present in some penicillin-resistant bacteria. The molecular weight of this enzyme in Staphylococcus aureus is 29.6 kilo Daltons (29.6 kg/mole or 29,600 g/mole or 29,600 ng/nmole) The amount of penicillin hydrolyzed in 2 minute in a 10-mL solution containing 109 g (1 ng) of purified penicillinase was measured as a function of the concentration of penicillin. Assume that the concentration of penicillin does not change appreciably during the assay. [Hint: Convert everything to the same concentration terms] Show all calculations and include spreadsheets and graphs to determine Km, Vmax and kcat for this enzyme. Make sure your final answers have correct units. [Another hint: Note that [S] and amount hydrolyzed are already in concentration terms. So you don't need to worry about the volume for calculating [S] and V. ] Penicillin concentration (microM) Amount hydrolyzed (nanoM) 1 110 3 250 5 340 10 450 30 580…

On a soap molecule, identify which end is known as being polar and which end is known as being nonpolar.  Based off of this analysis, label which end is hydrophobic and which one is hydrophilic.  Define hydrophobic and hydrophilic

What is the purpose of the ion exchange resin? A. The ion exchange resin removes Ca2+ and Mg2+ out of hard water to make it soft. B. The ion exchange resin takes out Ca2+ and gets rid of Na which makes the hard water softer. C. The ion exchange resin replaces the Ca2+ and Mg2+ in hard water with Na+ ions so the cleansing properties of the soap are retained. D. The ion exchange resin increases the amount of foam because it made the solution softer instead of hard water and you get more foam with soft water.