Exempel på chitin

• Chitin, a white horny substance found in the exoskeleton of several invertebrate animals. 

• It would be soft but for the chitin, as the horny substance is called. 

• The whole outer shell of the insect is made of the horny chitin. 

• There is no chitin in the skin between the segments. 

• They are worked by powerful muscles, and are supported, like a fan, by ribs of chitin, which may be accompanied by air-tubes, blood-channels, and nerves. 

• The protein elements may be derived from reticulate granules and chitin from the glycogen reserves of the oocyte.

• Alvinellids make complex chitin tube colonies on the flanks of black smoker chimneys.

• Within marine chitin-containing organisms, the -type is abundant and chitosan can also be found.

• Each lamella was generated by the deposition of parallel sheets or laminae of chitin microfibrils.

• The residual antifungal activity of the inactive mutant forms might be due to their ability to bind chitin.

• Body-wall with one bilateral pair of incisions, each surrounded by a circular patch of dark chitin.

• The pogonophorans produce tubes that consist of protein and chitin.

• The change in appearance of the developing shell layers as they became more fibrillar may reflect the formation of chitin-protein complexes.

• Accessory plates -long superficial strips of hard chitin, salient posteriorly.

• Activity on nascent and preformed chitin.

• The structure of chitin is comparable to the polysaccharide cellulose, forming crystalline nanofibrils or whiskers.

• Many organisms can easily break down starches into glucose, however, most organisms can not metabolize cellulose or other polysaccharides like chitin and arabinoxylans.

• Chitin color differs between males and females, being blue for the males and aquamarine for females, deepening to purple in old age.

• They are streaked with brown and purple and are housed in a transparent, gelatinous sheath composed of protein and chitin.

• This serosa secretes a cuticle rich in chitin that protects the embryo against desiccation.