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- Question No.1 (1) A positive Tollen’s test classifies a monosaccharide as a reducing sugar. (2) The bond which links the two monosaccharides of a disaccharide together is a peptide bond. (3) Monosaccharides cannot be broken done into simpler units by hydrolysis reactions. Which of the following statements are true? Question No. 2 : Assuming that a strand of DNA has the following sequence: 5'-AACCGGTT-3' What is the sequence of complementary strand of DNA, from the 5' to the 3' direction?QUESTION NO.1which of the following are chemical characteristics of monosaccharides? A. They contain multiple hydroxyl groupsB. they contain an aldehyde or ketone group C. They contain a branching carbon backbone D. They contain a carbon-carbon double bond E. Every carbon in a monosaccharide is fully reduced F. Every carbon in a monosaccharide is a chiral centerQUESTION NO.2 glucose absorption is hindered by _________ deficiency A. Retinol B. Thiamine C. Potassium D. Sodium E. Ascorbic acid F. Calciferol QUESTION NO.3 phospholipids is made primarily from A. L-glycerol 1-phosphate B. L-glycerol 3-phosphate C. D-glycerol 3-phosphate D. -glycerol 1-phosphate E. sn-glycerol 1-phosphate F. sn-glycerol 3-phosphateQuestion 1Predicting Secondary Structure Which of the following peptides is more likely to take up an -helical structure, and why? (a) LKAENDEAARAMSEA (b) CRAGGFPWDQPGTSN
- Question 9. Which of thefollowing is not formed through adehydration synthesis reaction?A. polysaccharideB. polypeptideC. Nucleic acidD. phospholipidE. glycerolQuestion 10. All of the following areparts of a nucleotide EXCEPT:A. a five-carbon sugar.B. a six-carbon sugar.C. a phosphate group.D. a nitrogenous base.Biomaterial question: Give a brief and clear answer, please a. Briefly describe the structural differences between the three major types of biomaterials, including their chemical structure, bonding characteristics, crystal structures, etc. b. Explain briefly the working principle and the information provided by the spectroscopic and chromatographic characterization techniques . Give an example to each of them.
- QUESTION 16 Peptidyl transferase activity (peptide bond enzyme activity) is associated with what site in the ribosome? E P A XQuestion 12 Carbohydrates that appear in glycosylated proteins and lipids in the GA include I. N-Acetylglucosamine II. fucose III. mannose IV. galactose I, II, IV only I, II, III only II, III, IV only I, II, III, IVBiomaterial question: Give a brief and clear answer, please do not write by hand Question: Explain briefly the working principle and the information provided by the spectroscopic and chromatographic characterization techniques. Give an example to each of them.
- Question 22: which of the following secondary structures would you expect to find on the surface of a globular protein? Alpha helix Beta sheet Loops between two alpha-helices None of the above because water would disrupt the hydrogen bonding that stabilizes these structures A,B and C as long as the polar and charged amino acid side chains face the surface of the protein.Text:QUESTION 16 Protein maturation in the ER includes. A Disulfide bond formation B. proteolytic cleavage C attachment of oligosaccharide d. Prolyl isomertzationQuestion 1 Part A: State the name of a disaccharide that contains this molecule (structure B). Part B: A branched polysaccharide made up of many monomers of structure B bonded together is commonly a key component of cell surface membranes when attached to either a phospholipid or a protein. What is the name given to such a polysaccharide when it is attached to a protein in the cell membrane, and what is the function of this polysaccharide? ___ (Structure B attatched) Thank you kindly :)