Proteins are high molecular mass complex biomolecules of amino acids. The important proteins required for our body are enzymes, hormones, antibodies, transport proteins, structural proteins, contractile proteins etc. Except for glycine, all `alpha`-amino acids have chiral carbon atom and have L-configuration. The amino acids exists as dipolar ion called zwitter ion, in which a proton goes from the carboxyl group to the amino group. A large number of `alpha`-amino acids are joined by peptide bonds forming polypeptides. The peptides having very large molecular mass (more than 10,000) are called proteins. The structure of proteins is described as primary structure giving sequence of linking of amino acids, secondary structure giving manner in which polypeptide chains are arranged and folded, tertiary structure giving folding, coiling or bonding polypeptide chains producing three dimensional structures and quaternary structure giving arrangement of sub-units in an aggregate protein meolecule.
All proteins on hydrolysis give

Options

A. peptides
B. `alpha`-amino acids
C. amines and carboxylic acid residues
D. enzymes

Answer

To answer the question "All proteins on hydrolysis give," we will analyze the process of protein hydrolysis step by step.

### Step-by-Step Solution:

1. **Understanding Proteins**:
- Proteins are large biomolecules made up of long chains of amino acids linked by peptide bonds.

2. **Definition of Hydrolysis**:
- Hydrolysis is a chemical process in which a compound reacts with water, leading to the breakdown of that compound. In the case of proteins, hydrolysis involves breaking the peptide bonds between amino acids.

3. **Peptide Bonds**:
- Peptide bonds are formed between the carboxyl group of one amino acid and the amino group of another. During hydrolysis, these bonds are cleaved.

4. **Result of Hydrolysis**:
- When proteins are hydrolyzed, they break down into their constituent amino acids. This means that the end products of protein hydrolysis are free amino acids.

5. **Identifying the Correct Option**:
- The options provided are:
1. Peptide
2. Alpha amino acid
3. Amine and carboxylic acid residue
4. Enzyme
- Since hydrolysis of proteins yields free amino acids, the correct answer is **alpha amino acid**.

### Final Answer:
All proteins on hydrolysis give **alpha amino acids**.

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