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HomeHomework HelpbiologyAmino Acids and Peptide Bonds

Amino Acids and Peptide Bonds

Amino acids are organic compounds that serve as the building blocks of proteins, characterized by a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a variable side chain (R group). Peptide bonds are covalent linkages formed between the carboxyl group of one amino acid and the amino group of another, resulting in the formation of a dipeptide or polypeptide chain.

intermediate
2 hours
Biology
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Overview

Amino acids are vital organic compounds that play a crucial role in building proteins, which are essential for various biological functions. Each amino acid has a unique structure, consisting of a central carbon atom, an amino group, a carboxyl group, and a variable side chain. Peptide bonds, formed...

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Key Terms

Amino Acid
Organic compounds that combine to form proteins.

Example: Glycine is the simplest amino acid.

Peptide Bond
A covalent bond formed between two amino acids.

Example: Peptide bonds link amino acids in a protein chain.

Protein
Large molecules made up of one or more chains of amino acids.

Example: Hemoglobin is a protein that carries oxygen in the blood.

Polypeptide
A chain of amino acids linked by peptide bonds.

Example: Insulin is a polypeptide hormone.

Essential Amino Acids
Amino acids that cannot be synthesized by the body and must be obtained from food.

Example: Leucine is an essential amino acid.

Non-Essential Amino Acids
Amino acids that can be synthesized by the body.

Example: Alanine is a non-essential amino acid.

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Key Concepts

Amino AcidsPeptide BondsProtein SynthesisEssential vs Non-Essential Amino Acids