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- 1. The figure below shows the Fischer projection of an L-aldohexose. T or F O. НО H- Но H- Но- ČH2OH Naturally occurring saturated long-chain fatty acids are usually in trans- configuration. 2. T or F 3. N-acetylglucosamine is commonly found in glycosaminoglycans. T or F 4. The isoelectric point of isoleucine is lower than that of histidine. T or F 5.. At pH 7, all amino acids stop migrating in isoelectric focusing. T or F 6. The following amino acid is a L-valine. T or F СООН H-NH2 CH-CH3 CH3 7. Salting out is a process to remove salts from proteins. T or F 8. There are five carbons in a pyranose ring. T or F 9. Hydrophobic interaction can be found in protein and DNA. T or F RNA is a polymer consisting of nucleosides joined together by phosphodiester bonds. 10. T or F 11. There are 3.6 base pairs in one turn of DNA helix. T or F15. Show the hydrolysis reaction using lipase of a triglyceride containing an omega-3-fatty acid, saturated fatty acid, and omega-6 fatty aid.4. Comment on the following: a. Whereas D-glucose is virtually unaffected by heating in dilute aqueous acid (apart from undergoing mutarotation), D-idose form the anhydrosugar X. Explain the different behaviour of the sugars. он OH HQ, OH но., OH HO.. H+ HO HO *CH¿OH но "CH,OH gluco se idose
- 1. Assuming that everything that’s needed to make tripalmitin comes from glucose, how many glucose would be used by adipose tissue in the synthesis of 1 mol tripalmitin? 2. How many ATP would be used (net of produced and used)? 3. If an animal absorbs 35 g glucose (MW = 180 g/mol) from drinking a can of pop, how many grams of tripalmitin (MW = 807 g/mol) can be produced from it in adipose tissue? Please provide only typed answer solution no handwritten solution needed allowed9. Draw the Stable configuration of B-D-glucose1. State if true or false a. GLUT5 transporter carries fructose from the intestinal lumen into the enterocyte. b. Microbial enzymes can digest carbohydrates containing β–1,4 bonds
- 8. The enzyme thiolase catalyzes one step in the ß-oxidation of saturated fats. One portion of the mechanism for this reaction is shown below. Describe the catalytic mechanism at work. (Note: "SCOA" is shorthand for the compound Acetyl-CoA) RCOCH₂COSCoA + HSCOA → H3C₂OSC0A + RCOSCOA HN NH CH₂ NH CH₂ CH₂ FS Grease NH3 H-SCO A NH CH2 CH₂ NH3 S Co A CH₂ NH 1 3 H-SCO A H3C SCO A NH3 a h-SCOA R-C S Co A CH₂ CH₂ C H₂ 0=0 HN NH + NH3 H₂C HN CH₂ NH CH₂ CH₂ 2 S Co A CH₂ NH NH8. Refer to the molecules shown below for the following questions: А. В. HO- HN- HO Il. H H HO H HO O., H. С. D. OH но HO, H OH H H. H HO "OH HO a. Name the above molecules. b. Which one/s is/are primary, and which one/s is/are secondary bile acids/salts? c. Name the molecules that will result from the action of intestinal bacteria on molecule A? d. Which one of the above molecules is the best emulsifier? Explain why.It has been stated many times that fatty acids cannot yield a net gain in carbohydrates. Why can odd-chain fatty acids be thought to break this rule to a small extent?
- 2. Find the structure of insulin online.Draw the tripeptide at the beginning of the Chain A and the tripeptide at the beginning of Chain B. Identify the N-ter, C-ter, and amide bond in each tripeptide.Then name each tripeptide.9. A daily diet of a 55-ycar-old woman, consisted of a 500 g of carbohydrates, 100 g of animal fats and 150 g of proteins, at the background of low physical activity. What possible consequences for the lipid metabolism such lifestyle could trigger? For the answer: a) compare the daily food consumption of the patient with the norm for this age and level of physical activity; b) draw the scheme of TAG synthesis in the liver and continue with their following transport to the tissues; c) draw the scheme of metabolic pathways which are more active in adipocytes of this patient compared with an individual of the same age consuming balanced dict; d) name the biologically active molecules released by adipocytes of this patient.Q: Which of the following about glycine- is true Glycine is essential amino acid. 9. b. Sylphyr c0ntaining at 4th pasition. Has a guonidine group. di optically iactive.
