Pune University Previous Papers
B.E. (Biotechnology) BIOMATERIALS
(2008 Pattern) (Elective – II) (Sem. – I)
Time :3 Hours] [Max. Marks :100
Instructions to the candidates:
1) Answer three questions from Section I and three questions from Section II.
2) Answers to the two sections should be written in separate answer books.
3) Neat diagrams must be drawn wherever necessary.
4) Pigures to the right indicate full marks.
SECTION – I
Q1 What are medical fibers? Name and explain processes for preparation of biofibers with its application and importance. 
Q2) List out different mechanical properties of materials and describe their importance when material is implanted in human body. 
Q3) How cross linking or curing occur in silicone elastomers? Describe methods of curing with mechanism. Explain an example of oxidative addition/reductive elimination of Pt in silicone elastomers. 
Q4) What are various types and properties of metals which are being used during implants? Explain processing steps involved for metallic implant device with one case study. 
Q5) Explain the properties and biomedical applications of three natural polysaccharides. 
Q6) a) Describe the synthesis of polylactic acid starting from lactic acid highlighting the intermediate products. 
b) Discuss the biomedical application of Pullalan in targeted drug delivery. 
SECTION – II
Q7) What is a biocatalyst? Explain in detail application of biocatalyst in production of aromatic precursors with one suitable case study? 
Q8) What are PHA and PHB? Discuss in detail production of PHA with its applications. 
Q9) Write a short note on : (Any Three) 
a) Dental implants.
b) Porous materials.
QI 0) Explain the optical properties of quantum dots and enumerate their applications in biomedicine. 
QII) a) What are the characteristics of bioadhesives? Describe various applications of bioadhesives. 
b) How can we use stress strain diagram in selecting the most appropriate materials for orthopedic biomaterials. 
QI2) List a type of materials used in each of the following medical applications: 
a) Skin repair.
b) Bone plates.
c) Contact lenses.
d) Tissue engineering scaffold.