Which of the following biomolecules use hydrogen bonds as important components controlling their molecular structures? (Select...

Which of the following biomolecules use hydrogen bonds as important components controlling their molecular structures? (Select all that apply.)

Transfer RNA

Cholesterol

Sucrose

Chromosomal DNA

Hemoglobin

None of the Above

Expert Solution

Hydrogen bonding plays an important role in the structures of transfer RNA, Chromosomal DNA and hemoglobin.

Intramolecular Hydrogen bonding between the adenine and tyrosine, and guanine and cytosine bases gives tRNA the clover leaf structure.

Intramolecular hydroen bonding between these 4 bases, between 2 strands of polynucleotide DNA strands make up the double stranded helical structure of the chromosomal DNA

Hemoglobin consists of 4 polypeptide chains, two alpha helical chains and two beta barrel structures. The alpha helix is a secondary structure consisting of right handed spiral formed due to hydrogen bonding between core NH group of one amino acid and core CO group of another amino acid, 3 or 4 residues above it, in the protein sequence. Beta sheets conssts of beta strands ( strech of 3-10 amino acids) that are connected side ways by hydrogen bonding between the residues in the layers, giving it a twisted sheet sructure.

gladiator answered 2 years ago

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