Introduction to Biomaterials Mid - I, September - 2014

1.A substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together
  • Biolpolymer
  • Polymer
  • Biomaterial
  • Material
Answer: B
2.The spontaneous aggregation of particles (atoms, molecules, colloids, micelles, etc.) without the influence of any external forces is called
  • Granulation
  • Compression
  • Self Assembly
  • Polymerisation
Answer: C
3.These are polymers produced by living organisms
  • Biopolymer
  • Live Polymers
  • Polylife
  • Polyorganisms
Answer: A
4.Which one of these is a type of Polymer Isomerism
  • Constitutional
  • Configurational
  • Conformational
  • All of the above
Answer: D
5.In situ polymerization means
  • in the polymerization mixture
  • out of the polymerization mixture
  • in lab of the polymerization mixture
  • on site of polymerization mixture
Answer: A
6.In membrane lamination the following chemical is used as coating for contacting surface of adjacent membranes and a bond is formed
  • Ethylene
  • Chloroform
  • Benzene
  • Formaldehyde
Answer: B
7.The organism used for production of PHA is
  • Helicobacter pylori
  • Pencillium
  • Alcaligenes eutrophus
  • Stereothermophilus
Answer: C
8.It can an also be used as a compostable packaging material, either cast, injection-molded, or spun is
  • PLLA
  • PGA
  • PLGA
  • PLA
Answer: D
9.UHMWPE stands for
  • Unique High Molecular Weight Polyethylene
  • Unique Higher Molecular Weight Polylactide
  • Ultra High Molecular Weight Polyethylene
  • Ultra High Molecular Weight Polylactide
Answer: C
10.PLLA has crystallinity of around _________percentage
  • 100%
  • 50%
  • 10%
  • 37%
Answer: D
11.A biological or synthetic substance which can be introduced into body tissue as part of an implanted medical device or used to replace an organ, bodily function is______________
Answer: Biomaterial
12.The ability of a material to perform with an appropriate host response in a specific situation and is related to behavior of biomaterials in various contexts is _______________
Answer: Biocompatiblility
13._____________________is the process of combining many small molecules known as monomers into a covalently bonded chain or network.
Answer: Polymerisation
14.High degree of branching, low % crystallinity, low melting point, high flexibility, transparent is seen in ___________________Polyethylene.
Answer: Low density polyethylene
15.Urea-Formaldehyde (UF) and Melamine Formaldehyde (MF) encapsulation systems are the two examples for _________________________________ method.
Answer: Insitu Polymersation
16.________________________________are biopolyesters synthesized by numerous microorganisms as an intracellular carbon and energy storage compounds.
Answer: Polyhydroxyalkanoates
17.___________________ is a biodegradable thermoplastic aliphatic polyester derived from renewable resources, such as corn starch.
Answer: Polylactides
18.Membranes of _________________copolymer is used for controlled release.
Answer: Ethylene-vinyl-acetate (EVA)
19.Poly-L-lactide (PLLA) is theobatined from polymerization of _________________
Answer: L,L-lactide
20._______________ of a material is a measurement of the extent to which it will dissolve in a given fluid, for example, water or saliva.
Answer: Solubility