Proteins

Proteins are large, complex molecules that play many critical roles in the body. They are made up of smaller units called amino acids, which are linked together in a specific sequence to form a unique protein.

Structure of Proteins

Proteins have a complex three-dimensional structure that is essential for their function. The structure of a protein is determined by its amino acid sequence, which is in turn determined by the genetic code.

Functions of Proteins

Proteins have a wide range of functions in the body, including:

• Enzymes: Proteins that catalyze biochemical reactions
• Structural components: Proteins that provide support and structure to cells and tissues
• Transport proteins: Proteins that help transport molecules across cell membranes
• Hormones: Proteins that act as chemical messengers in the body
• Antibodies: Proteins that play a key role in the immune system

Sources of Proteins

Proteins are found in a wide variety of foods, including:

• Meat and poultry
• Fish and seafood
• Dairy products
• Eggs
• Legumes (such as beans and lentils)
• Nuts and seeds

Study Guide

Here are some key points to remember about proteins:

1. Proteins are made up of amino acids.
2. The structure of a protein is essential for its function.
3. Proteins have a wide range of functions in the body, including enzymes, structural components, transport proteins, hormones, and antibodies.
4. Proteins are found in a variety of foods, including meat, poultry, fish, dairy products, eggs, legumes, nuts, and seeds.

Understanding the role of proteins in the body is essential for understanding how the body functions and how to maintain good health.