Question

Which of the following is not a macromolecule?
A) Nucleic acid
B) Starch
C) Protein
D) Sucrose

Answer 1

Hint: A macromolecule could be a very large molecule, like protein, commonly composed of the polymerization of smaller subunits called monomers. They're typically composed of thousands of atoms or more. A substance that's composed of monomers is called a polymer. The foremost common macromolecules in biochemistry are biopolymers and enormous non-polymeric molecules, synthetic fibers furthermore as experimental materials like carbon nanotubes.

Complete step by step answer:
A) Nucleic acid: Nucleic acid is a crucial class of macromolecules found in all told cells and viruses. The functions of nucleic acids must do with the storage and expression of genetic information. DNA encodes the knowledge the cell has to make proteins. A related style of the macromolecule, called RNA comes in numerous molecular forms that participate in protein synthesis.
B) Starch: Starch may be a macromolecule of polysaccharide composed of thousands of glucose units.
C) Protein: Proteins are a category of macromolecules that may perform a various range of functions for the cell. They help in metabolism by providing structural support and by acting as enzymes, carriers, or hormones. They're the macromolecules or building blocks of repeating units of amino acids. Like nucleic acids, proteins are polymers.
D) Sucrose: Sucrose isn't a macromolecule. Sucrose is the commonest disaccharide, which consists of the monomers glucose and fructose. A polysaccharide may be a long chain of monosaccharides linked by glycosidic bonds. The chain could also be branched or unbranched and may contain many sorts of monosaccharides.

So, the correct answer is Option D .

Note: Three major groups of macromolecules are essential within the industry, aside from biological macromolecules. These include plastics, fibers, and elastomers.
Elastomers are macromolecules that are flexible and stretchy. The elastic property lets these materials be utilized in products like hair bands and elastic waistbands. These objects might be stretched, and that they return to their original structure once released.
We wear fiber macromolecules. Nylon, Polyester, and acrylic fibers are employed in everything from blouses, belts to shirts and shoes. Natural fibers include wool, cotton, and silk.
Hence, there are many objects that we use today that are made from macromolecules. Many sorts of plastics are made through a process referred to as polymerization, which is the joining of monomer units from plastic products.