NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

BIO MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a polymer?
A
a large molecule made up of subunits (pieces)
B
building blocks
C
a small molecule made up of a single piece
D
none of the above
Explanation: 

Detailed explanation-1: -What is a polymer? A polymer is any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, which are multiples of simpler chemical units called monomers. Polymers make up many of the materials in living organisms and are the basis of many minerals and man-made materials.

Detailed explanation-2: -Most large biological molecules are polymers, long chains made up of repeating molecular subunits, or building blocks, called monomers. If you think of a monomer as being like a bead, then you can think of a polymer as being like a necklace, a series of beads strung together.

Detailed explanation-3: -Most macromolecules are polymers, which are long chains of subunits called monomers. These subunits are often very similar to each other, and for all the diversity of polymers (and living things in general) there are only about 40-50 common monomers.

Detailed explanation-4: -For polymers, a subunit is the monomer. For polysaccharides this is a monosaccharide (or, more correctly, a monosaccharide moiety). For polypeptides the subunits are amino acids. For nucleic acids the subunit is a nucleotide. The concept of subunits can apply, within biology, beyond the assembly of polymers.

Detailed explanation-5: -Polymer molecules, or macromolecules, are composed of large numbers of linked, small repeat units. The units from which polymers are synthesized are called monomers. Polymers may be made from one kind of monomer, giving homopolymers, or from several kinds of monomers, giving copolymers.

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