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- 8.ldentify each of the amino acid in the polypeptide and then name it using the 3-letter abbreviations. H2N- CH- CH- CH CH- CH- OH CH2 CH2 CH-OH CH2 CH2 CH2 Cн CH2 CH2 NH NH ENH NH210. List 2 polysaccharides that are used for energy storage. What is interesting about the orientation/shape/bonding/architecture in these molecules?8. Which of the following is NOT true about polypeptides? The peptide bond that links the amino acids together is a type of covalent bond formed through dehydration synthesis. If the overall isoelectric charge of a polypeptide is negative, it will be pulled towards the cathode end during gel electrophoresis. The polypeptide chain modified with ubiquitin molecules are tagged for proteasomal degradation ○ In prokaryotic translation, the initial polypeptide chain produced has a formylmethionine amino acid at the N- terminal.
- 24. Which polysaccharide is cleaved by beta glucosidases?A. AmyloseB. GlycogenC. InulinD. Cellobiose25. Heparin is one of the polysaccharides that are assigned for you to research on. Based on your readings, what is themonosaccharide units found in heparin?A. glucosamine, glucuronic acid, and iduronic acidB. glucose, fructose and galactoseC. N-acetylmuramic acid and N-galacturonic acidD. L-fucose, D-galactosamine and D-mannitol28) peptidyl transferase enzyme activity forms A- peptide bonds between nucleotides B-peptide bonds between amino acids C- phoshodiester bonds between nucleotides D- hydrogen bonds between nucleic acid bases E- phosphodiester Bonds between amino acids4.A nucleic acid has 13% of adenine. Determine the composition of guanine , cytosine and thymine 5.What are the forces that stabilizedouble stranded DNA? 6.Provide the structures and functions of three biochemically important disaccharides 7.What arethe structural and functional differences between starch and cellulose
- Section B: True / False The diagram shows an amino acid in L-configuration. NH, 1. H- CO,H CH,OH This sugar can be found in DNA. ҫнон он 2. но CH,OH 3. Base pairing can be found between two purines in DNA. The relation between the following two sugars is epimers. сно сно но C-OH HCOH OH но C-H HC он HC- он он он CH,OH CH,OH3. Below is the structure of a nucleotide triphosphate. ATP R-O- R-O R-O- OIP O P -O O OP ADP OIPIO b. a. Label each phosphate group as a, ß, or y in boxes provided below each phosphate group. Put an "X" under all products you would expect from nucleophilic attack at the y phosphate group by a generic alcohol (R-OH). fofo O H R-O O. H Adenosine R-O OH fof O O=P O O H R-O-Adenosine H OH OIPIO NH₂ O-AMP AMP N O=0 O-Adenosine4. Draw the following amino acids linked by peptide bonds: a. aspartate b. lysine c. cysteine d. tryptophan Indicate the letter designation for each amino acid.
- 5. What is a saponification number? What does a high saponification number indicate? Name a lipid with a high and a low saponification number.3. Identify if the following is a pyrimidine/purine nucleotide or a pyrimidine/purine nucleoside and write whether the sugar moiety is a ribose or deoxyribose. NH2 NH2 wofofo но- но. А. В. OH OH ОН ОН OH H3C. NH HN но. CH2 0-P OCH2 С. D. H H OH он он 4. Complete the table below: RNA DNA Strand Sugar residue Nitrogenous bases Main Function3. Identify if the following is a pyrimidine/purine nucleotide or a pyrimidine/purine nucleoside and write whether the sugar moiety is a ribose or deoxyribose. NH2 ŅH2 N- ofoka N- 'N. HO-P-O HỌ. А. В. ÓH OH ОН ОН OH