Question

Which one of the following statements is wrong?
A) Sucrose is disaccharide
B) Cellulose is a polysaccharide
C) Uracil is a pyrimidine
D) Glycine is a sulphur containing amino acid

Answer 1

Hint: All biomolecules share a basic relationship among function and structure, which is impaired by influences like the environment in which a single biomolecule exists.

Complete Answer:
The biomolecule, also known as the biochemical molecule, is one of the many compounds formed by cells and living organisms. Biomolecules have a broad variety of structures and proportions and serve a wide range of roles. Carbohydrates, nucleic acids, lipids, and proteins are the four main categories of biomolecules.

Now, let us find the solution from the options-
- Sucrose is an ordinary sugar. It is a disaccharide, a compound made up of glucose and fructose: two monosaccharides. Sucrose is naturally found in crops where the table sugar is processed. Thus, option A is not the correct option.
- Cellulose, is a polysaccharide made up of 3,000 or more units of glucose. Cellulose, the essential structural element of plant cell walls, constitutes about 33 percent of all plant material and is the most plentiful of all organic compounds that exist naturally. Thus, option B is not the correct option.
- Purines and pyrimidines are the nitrogenated bases. Purines are adenine and guanine, respectively. There are thymine and cytosine pyrimidines. The thymine in RNA is substituted by uracil. Thus, option C is not the correct option.
- Glycine is an amino acid containing a single atom of hydrogen as a side chain. It is the shortest amino acid, with $-N{H_2}-C{H_2}-COOH$ as a molecular formula. Glycine is among the amino acids that is proteinogenic. It is encoded beginning with GG by all the codons. Glycine, because of its compact shape, is essential to the creation of alpha-helices in the secondary protein structure.

Thus, the correct answer is option (C) Eubactaria are also called false bacteria.

Note: Glycine is a crystalline compound that is colorless and sweet-tasting. That is the only proteinogenic amino acid that is achiral. Because of its small side chain of just one hydrogen atom, it can operate in hydrophobic and hydrophilic conditions. The acyl radical is glycyl.