BLD 324 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ LATEST UPDATE

BLD 324 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ LATEST UPDATE Which RBC process does not require energy? a. Cytoskeletal protein deformability b. Maintaining cytoplasm cationic electrochemical gradients c. Oxygen transport d. Preventing the peroxidation of proteins and lipids c. Oxygen transport What pathway anaerobically generates energy in the form of ATP? a. 2,3 BPG pathway b. Embden-Meyerhof pathway c. Hexose monophosphate pathway d. Rapoport-Luebering pathway b. Embden-Meyerhof pathway Which is true concerning 2,3-BPG? a. Enhances O2 release from hemoglobin b. Source of RBC ATP c. Source of RBC glucose d. The least abundant of RBC organophosphates a. Enhances O2 release from hemoglobin What hexose-monophosphate shunt products participate in the detoxification of peroxides? a. 2,3-BPG and pyruvic acid b. ATP and lactic acid c. NADPH and reduced glutathione d. Pyruvic and lactic acid c. NADPH and reduced glutathione Which of the following helps maintain RBC shape? a. Cytoskeletal proteins b. Glycocalyx c. GPI anchor d. Membrane phospholipids a. Cytoskeletal proteins The glycolipids of the RBC membrane: a. Attach the cytoskeleton to the lipid layer b. Carry RBC antigens c. Constitute ion channels d. Provide flexibility b. Carry RBC antigens RBC membranes block passage of most large molecules, such as proteins, but allow passage of small molecules such as the cations Na+, K+, and Ca2+. What is the term for this membrane property? a. Deformable b. Flexible c. Intangible d. Semi permeable d. Semi permeable RBC membrane phospholipids are arranged: a. In a hexagonal lattice b. In chains beneath a protein cytoskeleton c. In two layers whose composition is asymmetric d. So that hydrophobic portions are facing the plasma c. In two layers whose composition is asymmetric RBC membrane cholesterol is replenished from the: a. Cytoplasm b. EMB pathway c. Mitochondria d. Plasma d. Plasma Hemoglobin iron may become oxidized to Fe3+ by several pathologic mechanisms. What portion of the Embden-Meyerhof pathway reduces iron to Fe2+? a. Hexose monophosphate pathway b. Methemoglobin reductase pathway c. Rapoport-Luebering pathway d. 2,3-BPG shunt