Basic Science Exam Module This exam must be completed in 15 minutes. Click here to start the exam Time left: 900 1. Bacterial growth in a biofilm or “slime layer” around an implant may be resistant to antibiotic therapy because of pH alterations bacterial van Der Waal's forces Poor vascular supply Phenotypic changes in surface-adherent bacteria changing their antibiotic susceptibility (Question 1 of 10)2. River water contamination in open fracture leads to increase risk of infection with which of the following organism? Staphylococcus epidermidis Clostridium welchi Pseudomonas Aeuriginosa Treponema pallidum Eikinella corrodens(Question 2 of 10)3. The following factor increases the rigidity of an external fixator except: Increased pin number Half pins separated by 45° Decreased pin group separation Increased diameter of pins Decreased bone-rod distance (Question 3 of 10)4. Proteoglycan content is highest in which of the following regions of articular cartilage The deep zone The superficial zone The middle zone The subchondral zone The zone of calcified cartilate (Question 4 of 10)5. Bone Morphoenic Protein belongs to which superfamily of molecules? TGF-beta Collagens Interferons VEGF PDGF(Question 5 of 10)6. Changes in articular cartilage resulting from normal aging include all the following except chondrocyte synthetic activity is decreased Decreased stability of large proteoglycan aggregates superficial cartilage fibrillations Increased crosslinking of collagen Increased water concentration(Question 6 of 10)7. What is the predominant collagen of articular cartilage and ligaments respectively? Type III and Type II Type I and type III Type II and Type I Type IV and Type II(Question 7 of 10)8. Osteoblasts found in callus around a fracture is derived from Mononuclear white cells derived from fracture hematoma Endothelial and perithelial cells of invading capillaries Stem cells in the connective tissue Local connective tissue Reticuloendothelial cells local migration from Bone marrow of the exposed medulla (Question 8 of 10)9. What is the main component of articular cartilage? water collagen lipids proteoglycans (Question 9 of 10)10. the drug that is known to cause tendinitis and tendon rupture when administered in children? Ciprofloxacin Pencillin Amikacin Rifampicin(Question 10 of 10) Loading ... Get explanatory asnwers from our book, <br /> Post Views: 5,919 Related Posts Basic Science Exam Module 2Get explanatory answers from our book, Hand Surgery Exam ModuleGet explanatory answers from our book, Spine Surgery Exam ModuleGet explanatory answers from our book,
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