Correct Answer: C
Explanation:
Scientists have developed a super strong, flexible Bio-glue for wound healing without causing toxicity.
It has been inspired by an adhesive material (glue) secreted by slugs that sticks to biological tissues
Slugs naturally secrete a special kind of mucus (adhesive material) in its place when threatened, making it difficult for a predator to pry it off its surface.
The bio-glue is double-layered hydrogel consisting of an alginate-polyacrylamide matrix supporting an adhesive layer that has positively-charged polymers protruding from its surface.
It bonds to biological tissues via three mechanisms – electrostatic attraction to covalent bonds between neighbouring atoms, negatively charged cell surfaces and physical interpenetration.
This bond makes the adhesive super strong.
It is the combination of a very strong adhesive force and has ability to transfer and dissipate stress.
It can bind to tissues with strength comparable to the body’s own resilient cartilage.