carbs and lipids handout Spring 22 (1)

Peptides Proteins Amino Acids How do amino acids exist in solution? What is the solubility in organic solvents, aqueous acids, aqueous bases?

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,…

What is the purpose of Safety Data Sheets? Why are these important when handling common food service chemicals? What information/components are generally included? How do Safety Data Sheets vary?

Highest concentration of dye Lowest concentration of dye Answer Bank 3.0 mL dye and 3.0 mL water 2.0 mL dye and 6.0 mL water 2.0 mL dye and 0.0 mL water 20 µM dye solution 6.0 mL dye and 2.0 mL water

what is a reason why company leaders would add melamine to their product to make the protein content appear higher than the actual amount of the product?  Describe two possible reasons for why food safety inspectors often use an overall nitrogen content test, instead of Bradford assay, to determine the protein content in a product.

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

3. Standard white vinegar you can buy in the grocery store is 5% concentration. That means 5% of the liquid vinegar is acetic acid and 95% of the solutioni is water. In a hardware store, you can buy industrial strength vinegar, which is 30% concentration. This means that 30% of the vinegar is acetic acid, and the remaining 70% is water. Samuel does another experiment, this time with 5% vinegar and 30% vinegar. He sets up two science fair volcanoes (in no particular order), each with the same temperature, mass of baking soda and volume of vinegar. But one volcano uses 5% vinegar and the other volcano uses 30% vinegar. He measures the volume of gas production for the'first minute of each reaction, and he records the data below. Volcano # 1 Volume of gas produced (m) vs Time (s) for Volcano t Time (s) Volume of gas produced (mL) 10 25 38 40 20 30 46 30 Volume of gas produced (ml) 50 40 50 52 60 53 40 Time ( 20 60 Volcano 2 Volume of gas produced iml) vs. Time is) for Vocano 2 Volume of…

Consider the following data that was collected for a protein that contain 0.76 % tryptophan amino acids by weight (Molecular weight of tryptophan amino acids is 204 g/mol). Absorbance Concentration (mg/L) 0.0250 0.100 0.150 0.226 0.259 0.400 0.600 0.964 1.14 1.78 1.45 2.35 1.78 2.87 How many mg of the protein present in 1.00 L solution that shows an absorbance of 1.20?

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 •

3. Standard white vinegar you can buy in the grocery store is 5% concentration. That means 5% of the liquid vinegar is acetic acid and 95% of the solution is water. In a hardware store, you can buy industrial strength vinegar, which is 30% concentration. This means that 30%% of the vinegar is acetic acid, and the remaining 70% is water. Samuel does another experiment, this time with 5% vinegar and 30% vinegar. He sets up two science fair volcanoes (in no particular order), each with the same temperature, mass of baking soda and volume of vinegar. But one volcano uses 5% vinegar and the other volcano uses 30% vinegar. He measures the volume of gas production for the first minute of each reaction, and he records the data below. Volcano # 1 Volume of gas produced (ml.) vs. Time (s) for Volcano #1 Volume of gas produced (mL) Time (s) 60 E 50 10 25 40 20 38 30 40 46 50 30 20 • Volume of gas produced (ml.) 50 52 53 10 60 20 40 60 80 Time (s) Volcano # 2 Volume of gas Volume of gas produced…

The property of water solutions to conduct electric current is possible for all of the 20 standard amino acids. True or False?

Your supervisor asks to make 300 mL of a 1.0% (w/v) starch solution using a 5% (w/v) stock solution. You have calcuated how much stock solution you need. But, how much water (in mL) will you need to add to the stock to achieve the correct final concentration?

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.

Cacay oil has higher palmitic acid content than butter or coconut oil (refer to Table 1). Therefore, cacay oil SHOULD be solid at room temperature, not oil

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

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