Medical Biochemistry Test 100% with correct answers 2023-24

Medical Biochemistry Test 100% A. proteins - correct answer1. what biomolecules are considered the most abundant and functionally diverse in living systems? A.proteins B.carbohydrates C.nucleic acids D.fatty acids E.terpenoids E. III and IV - correct answer2. which of the dollowing statements is correct about protein structure? l. the primary structure of a protein involes a-helicels, b sheets, and other types o folding patterns that occur due to a regular repeating pattern of hydrogen bong formation. secondary structure consists of the amino acid sequence along the chain. lll. The tertiary structure involves electrostic and hydrophobic interactions, van der waaals interactions, and hydrogen and disulfide bonds. lV. Quaternary structure refers to the interaction of one or more subunits to form a functional protein, using the same forces that stabilize the tertiary structure. A. l only B. l and ll C.ll and lll D.l and lV E.lll and lV D.beta-amyloid - correct ulated masiloded proteins occure in a variety of diseases. Chich of the following proteins is misfloded in patients with alzheimers disease? A.prion protein B.aplha-synuclein C.glutamine stretches D.beta-amyloid E.none of these B. glutamic acid is being substituted by valaine at position number 6 - correct lobinopathies result from mutation that produce alterations in the structure of hemoglobin. One commin mutation results in sickle cell anemia, in which a mutated form of hemoglobin distorts the rbc into a crescent shape at low oxygen levels. Sickle cell anemia happens when. A. valine is being substituted by glytamine at codon number 6 B. glutamic acid is being substituted by valaine at position number 6 C.glutamine is intercalated by histidine at codon number 6 D.gene transcription is disrupted. E.frameshift mutation takes a place A. resopiratory acidosis - correct answer5. acid base distubrances occus under a variety of conditions. Which of the following is the result of hypoventilation due to retention of carbon dioxide in the lungs? A. resopiratory acidosis B.resperatory alkalosis C.metabolic acidosis D.metabolic alkalosis E.lactic acidosis D.isolectric point - correct amino acids, the ph at which the number of positive charges equals the number of negative charges is termed as _____ A. chirality B.amphoteric property C.optical activity D.isolectric point E.zwitterions E.switterions - correct ules that contain an equal number of ionizable groups of opposite charge and that therefore bear no net charge are termed as ___. A.chirality B.amphoteric property C.optical activity D.electric point E.switterions A.vitamin C - correct ems associated with connective tissue and structural protiens are present in a number of diseases. In scurvy, hydroxination of proline residues is decreased amd an unstable form of collagen is produced. Bones , teeth ,blood bessels and other structures rich in collagen develop abnormally. Bleeding gums and poor wound healing are often observed. Which of the follwong vitamin deficiencies is associated to scurvy? A.vitamin C B.vitamin E C. vitamin A D.vitamin D E.vitamin K B.l, ll and lll - correct of the following is true about insulin functions? l. insuliin is released from the pancreas when blood glucose levels are elevated ll. insuling promotes the transport of glucose into muscle and fat cells. in promotes storage of energy lV. Insulin increases glycogen catabolism in the liver and muscle A.l and ll B.l, ll and lll C.l, ll and lV D.l only E.l, ll, lll and lV E.michaelis menten equation - correct enzyme kinetics can be described by what equation? A.noyes- whitney equation B.henderson hasselbalch equation C.arrhenius equation D.van slyke equation E.michaelis menten equation D.1 and 2 are incorrect - correct ate the given statements. 1 competitive inhibitors compete with the substrate for binding at the allosteric site of the enzyme. 2noncompetitive inhibitors bind to the enzyme or the enztme substrate complex ar the active site.