NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology: Questions 1 of 3503

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» Human Physiology » Digestion and Absorption » Digestion, Absorption and Assimilation of Proteins, Carbohydrates and Fats



Which of the following shows the correct sequence of events during digestion of protein?


Choice (4) Response


Proteins acid metaproteins proteoses amino acids peptides


Proteins primary proteins peptides amino acids.


Proteins proteoses and peptones peptides amino acids


Proteins peptones acid metaproteins and peptides.




A protease is any of various water-soluble compounds that are produced during digestion by the hydrolytic breakdown of proteins short of the amino acid stage. Peptone is a water-soluble mixture of polypeptides and amino-acids formed by the partial hydrolysis of protein.

Peptides are naturally occurring biological molecules. They are short chains of amino acid monomers linked by peptide bonds. The covalent chemical bonds are formed when the carboxyl group of one amino acid reacts with amino group of another. Amino-acids are biologically important organic compounds composed of amine and carboxylic acid functional groups, along with a side-chain specific to each amino acid. The key elements of an amino acid are carbon, hydrogen, oxygen and nitrogen though other elements are found in the side chains of certain amino acids.

Protein digestion in body

Protein Digestion in Body

Proteins are converted into Peptones and proteases by the enzyme Pepsin. Peptones and proteases are large and small peptides respectively. The peptides are then converted into amino acids.




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