A homopolymer has only one type of building block called a monomer repeated 'n' number of times. A heteropolymer has more than one type of monomer. Proteins are heteropolymers made of amino acids. While a nucleic acid like DNA or RNA is made of only 4 types of nucleotide monomers, proteins are made of

40 types of monomers

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Only one type of monomer

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20 types of monomers

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3 types of monomers

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Solution

The correct option is C
20 types of monomers

Amino acids joined by peptide bonds form proteins. Twenty types of amino acids are present in natural proteins.

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Q. A homopolymer has only one type of building block called monomer repeated 'n' number of times. A heteropolymer has more than one type of monomer. Proteins are heteropolymers usually made of:

A homopolymer has only one type of building block called monomer repeated 'n' number of times. A heteropolymer has more than one type of monomer. Proteins are heteropolymers usually made of

(a) 20 types of monomers (b) 40 types of monomers

Q. Polynucleotides are called nucleic acids. Each nucleotide is made up of three parts, i.e, a pentose sugar, a heterocyclic nitrogenous base and phosphoric acid. Depending upon the nature of sugar whether, ribose or deoxyribose, nucleic acids are called RNA and DNA respectively. In all, there are five nitrogenous bases, two of which are purines while the remaining three are pyrimidines. Out of these five bases, each type of nucleic acid has four of them.

Which base is only found in the nucleotide of RNA?

Q. Assertion :A protein is a heteropolymer. Reason: Dietary proteins are the source of non- essential amino acids.

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The correct option is C 20 types of monomers Amino acids joined by peptide bonds form proteins. Twenty types of amino acids are present in natural proteins.

The correct option is C
20 types of monomers

Amino acids joined by peptide bonds form proteins. Twenty types of amino acids are present in natural proteins.