Introduction to Cell Biology and Proteins

This section introduces the N5 biology course structure and focuses on the cell biology unit, specifically proteins and enzymes.

Highlight: The cell biology unit covers cell structure, transport across cell membranes, DNA and protein production, proteins and enzymes, genetic engineering, and respiration.

The document emphasizes the importance of understanding proteins and enzymes within the context of cell biology. It sets the stage for a detailed exploration of these crucial biological molecules and their functions.

Proteins: Structure and Functions

This page delves into the variety of protein shapes and functions, explaining how they arise from the sequence of amino acids.

Definition: Proteins are complex molecules with diverse functions in living organisms, including structural support, enzymatic activity, hormone signaling, immune response, and cellular reception.

The document outlines five main types of proteins and their functions:

1. Structural proteins: Provide protection and support (e.g., hair, skin, nails)
2. Hormones: Act as chemical messengers in the bloodstream
3. Antibodies: Produced by white blood cells to fight diseases
4. Receptors: Found on cell membranes for signal reception
5. Enzymes: Catalyze chemical reactions in cells

Vocabulary: SHARE - An acronym used to remember the five main types of proteins (Structural, Hormones, Antibodies, Receptors, Enzymes)

This section provides a comprehensive overview of protein diversity and their critical roles in biological systems.