Question
Question: Match the compounds and their chemical units. Compounds | Units ---|--- A) Amylopectin| p...
Match the compounds and their chemical units.
| Compounds | Units |
|---|---|
| A) Amylopectin | p) Unbranched polymer of glucose |
| B) Lignin | q) Branched polymer of glucose |
| C) Chitin | r) complex polymer of aromatic alcohols |
| D) Proteins | s) polymer of acetyl glucosamine |
| t) polymer of amino acids |
A) A-p, B-r, C-s, D-t
B) A-q, B-r, C-s, D-t
C) A-q, B-p, C-s, D-t
D) A-p, B-r, C-p, D-t
Solution
The land snail is the common name for the terrestrial gastropod mollusks that have shells.Like other mollusks, the land snails have a mantle, and they have one or two pairs of tentacles on their head. Their internal anatomy includes a radula and the primitive brain.
Complete answer:
The starch is the storage polysaccharides of plants are made up of the amylose which is a straight chain of the glucose and the amylopectin which is a branched chain of the glucose.The lignin is a polymer of the coniferyl alcohol and the other aromatic alcohols. The chitin is a polymer which forms the cell wall in fungi and in the arthropods.It is made up of acetyl glucosamine units. The proteins are the polymers of amino acids.In the proteins amino acids are joined together by the peptide bonds.
Therefore, the correct answer is option B.
Additional information:
The amylopectin is the water soluble polysaccharide and highly branched polymer of the alpha glucose units found in the plants. It is one of the two components of the starch, the other being amylose.
The lignin is a class of the complex organic polymers that form the key structural materials in the support tissues of the vascular plants and some of the algae. The lignins are particularly important in the formation of the cell walls, especially in wood and in the bark, because they lend rigidity and do not rot easily.The chitin is the fibrous substance consisting of the polysaccharides, which is the major constituent in the exoskeleton of the arthropods and the cell walls of the fungi.The proteins are macromolecules formed by the amino acids.Proteins are large size molecules, polymers of the structural units called as the amino acids.
Note: The glycogen is a storage form of energy in the animals. It is a branched polymer composed of the glucose units. It is more highly branched than the amylopectin.Cellulose is a structural polymer of the glucose units found in the plants.