Biomolecules MCQs for NEET — Zoology Questions with Answers

Proteins, enzymes, and lipids are all types of biomolecules. Proteins are composed of amino acids and perform a variety of functions in the body such as catalyzing metabolic reactions and DNA replication. Enzymes are a specific type of protein that act as catalysts in biochemical reactions. Lipids are a diverse group of compounds, including fats, oils, and hormones, that are insoluble in water but soluble in organic solvents. Thus, the correct answer is 'all of the above'.

Formic acid is an organic compound and the simplest carboxylic acid, but it is not typically classified as a biomolecule. Biomolecules are organic molecules that are involved in the maintenance and metabolic processes of living organisms. Examples include nucleic acids (DNA and RNA), vitamins, and carbohydrates. Therefore, formic acid is not considered a biomolecule.

In protein molecules, hydrogen bonds are primarily formed between the -NH group of one amino acid and the -CO- group of another amino acid. This interaction is crucial for the secondary structure of proteins, such as alpha-helices and beta-sheets.