Q.Find and write down structures of 10 interesting small molecular weight biomolecules. Find if there is any industry which manufactures the compounds by isolation. Find out who are the buyers.

Small molecular-weight biomolecules are the compounds of the acid-soluble pool, each with a molecular weight below about one thousand daltons. Ten interesting examples, described by their make-up:

• Glycine — the simplest amino acid: an alpha-carbon bearing an amino group, a carboxyl group, a hydrogen, and a side chain that is just a hydrogen.
• Alanine — an amino acid with a methyl (CH3) side chain on the alpha-carbon.
• Serine — an amino acid with a hydroxy-methyl side chain.
• Glucose — a six-carbon sugar, molecular formula C6H12O6.
• Ribose — a five-carbon (pentose) sugar, molecular formula C5H10O5.
• Glycerol — trihydroxy propane, the three-carbon backbone of fats.
• Palmitic acid — a saturated fatty acid of sixteen carbons (including the carboxyl carbon).
• Arachidonic acid — an unsaturated fatty acid of twenty carbons (including the carboxyl carbon).
• Adenine — a nitrogen base with a purine ring.
• Adenosine — a nucleoside: the base adenine joined to a sugar.

Many such compounds are indeed isolated and manufactured industrially — amino acids, sugars, glycerol and fatty acids are produced by chemical, food and pharmaceutical firms. Typical buyers are food and nutrition companies, pharmaceutical and cosmetic makers, and research laboratories.

When a tissue is analysed, thousands of small organic compounds turn up in the acid-soluble pool. Each has a fairly small molecular weight, roughly in the range of eighteen to about eight hundred daltons. Here are ten interesting examples, with their composition described in words:

• Glycine — the simplest amino acid. Picture a central alpha-carbon carrying four things: an amino group, a carboxyl group, a hydrogen, and a side chain (the R group) that is itself just a hydrogen.
• Alanine — an amino acid built like glycine but with a methyl group (CH3) as its side chain on the alpha-carbon.
• Serine — an amino acid whose side chain is a hydroxy-methyl group.
• Glucose — a common single sugar with the molecular formula C6H12O6.
• Ribose — a pentose (five-carbon) sugar with the molecular formula C5H10O5; it is the sugar found in one of the nucleic acids.
• Glycerol — trihydroxy propane, a small three-carbon molecule with three hydroxyl groups; it is the backbone to which fatty acids attach in fats and oils.
• Palmitic acid — a saturated fatty acid: a carboxyl group attached to a long chain, with sixteen carbons in all including the carboxyl carbon, and no carbon-to-carbon double bonds.
• Arachidonic acid — an unsaturated fatty acid of twenty carbons including the carboxyl carbon, carrying one or more carbon-to-carbon double bonds.
• Adenine — a nitrogen base built on the purine ring skeleton.
• Adenosine — a nucleoside, formed when the nitrogen base adenine is attached to a sugar.

Many of these small compounds are not only found in tissue but are deliberately isolated and manufactured. Amino acids, sugars such as glucose, glycerol and fatty acids are all produced on an industrial scale by chemical, food-processing and pharmaceutical companies, either by extraction from natural material or by other manufacturing methods. The buyers are varied: food and nutrition companies (for sweeteners, additives and supplements), pharmaceutical firms (for drug ingredients and intermediates), cosmetic manufacturers (glycerol and fatty acids are common in creams and soaps), and research and diagnostic laboratories that need pure reagents.

Method: Building a Reference List from Composition, Then Reasoning to Industry Use

This is an open-ended "find out and investigate" exercise, so the approach has two distinct phases: first assemble a correct list grounded in real chemistry, then reason outward to the industrial/commercial angle the question also asks about.

For the list itself, don't pick molecules at random — draw from the categories you already know make up the small-molecular-weight (acid-soluble pool) biomolecules: at least one amino acid, one sugar, one lipid component (glycerol or a fatty acid), and one nucleotide-related molecule (a base, nucleoside, or nucleotide). For each one, be ready to describe its composition in words even without drawing it — for an amino acid, name the four groups on the alpha-carbon; for a sugar, give its molecular formula; for a fatty acid, state its carbon count and whether it's saturated; for a nucleotide-related molecule, state which base and which sugar it's built from. This composition-first habit is what makes the list "biomolecule structures," not just a list of names.

For the industry/buyer part, reason from a simple principle: any small molecule the body already needs in bulk (amino acids for nutrition, sugars for food, glycerol and fatty acids for cosmetics/food) is exactly the kind of molecule industry finds worth extracting or synthesising at scale, and the buyers naturally follow from the use — food and nutrition companies, pharmaceutical firms, and cosmetic manufacturers are the recurring answer across almost all of these compounds.