1.Biodegradable in excess can prove to be poisonous.
a) True
b) False
Explanation: In the case of synthetic biodegradable polymers there is a potential presence of toxic substances when broken down such into simpler monomers or the additives used during the process of polymerization.
2. The properties of biodegradable polymers remain fixed for everyone.
a) True
b) False
Explanation: Customization of properties, both bulk and surface, unlike the metallic polymers. In metallic polymers, the properties depend on the kind of metal in use.
3. ____________ polymers are those which are human-made polymers.
a) Hydrogel
b) Biodegradable
c) Natural
d) Synthetic
Explanation: Synthetic polymers are those which are human-made polymers. Polymers are those which consist of repeated structural units known as monomers. E.g., polythene has ethene as a monomeric unit.
4. Synthetic polymers are sometimes referred as __________
a) plastics
b) metals
c) ceramic
d) jelly
Explanation: Synthetic polymers are sometimes referred as “plastics”, of which the well-known ones are nylon and polyethylene. The polymers which are formed by linking monomer units, without the any change of material, are known to as addition polymers or also called as chain-growth polymers. All these are said to be synthetic polymers.
5. Non-biodegradable- Synthetic polymers are made from _____________
a) petroleum
b) lipids
c) carbohydrates
d) proteins
Explanation: Many polymers that are commonly found in households are non-degradable as they are petroleum based polymers. In order to control the environmental issues arising due to these polymers, bioplastics have been introduced as an alternative, these are biodegradable in nature.
6. Synthetic materials owing to the bioactive properties have better interactions with the cells which allow them to enhance the cells’ performance in a biological system.
a) True
b) False
Explanation: Natural materials owing to the bioactive properties have better interactions with the cells which allow them to enhance the performance of the cell in a biological system. Synthetic biomaterial guidance provided by biomaterials may facilitate the restoration of the structure and function of damaged or diseased tissues.
7. Which of the following is an example of Synthetic polymer?
a) Polylactic acid
b) Dextran
c) Chitin
d) Amylose
Explanation: Polylactic acid is an example of synthetic polymers. Dextran, chitin and amylose are examples of natural polymers.
8. Polyesters are a kind of Natural polymer.
a) True
b) False
Explanation: Polyesters are the largest family of synthetic materials under study. The most commonly used polyesters are poly (lactic acid) (PLA), poly (α-hydroxy acids), poly (glycolic acid) (PGA) etc.
9. Synthetic polymers can be manufactured with additional chemical functional groups to induce tissue regeneration.
a) True
b) False
Explanation: Synthetic polymers are attractive because they can be fabricated into various shapes. Synthetic polymers can be manufactured with additional chemical functional groups to induce tissue regeneration.
10. Polylactides are non-biodegradable in nature.
a) True
b) False
Explanation: Generally, the degradation of polylactides involves random hydrolysis of the ester bonds. Poly (lactic acid) degrades to form lactic acid which is normally present in the body.