Exam Board: Cambridge International
Course: AS Biology
Unit: Biomolecules
Lesson: Proteins
File format: PowerPoint
Sylabbus code: 2.3
This lesson explores proteins which are essential biomolecules with diverse functions, consisting of amino acids linked by peptide bonds. Their complex three-dimensional structures dictate their specific roles. The primary structure represents the linear sequence of amino acids. Secondary structure involves local folding patterns like alpha helices and beta sheets. Tertiary structure refers to the overall three-dimensional arrangement of the protein. Some proteins possess quaternary structures formed by the association of multiple subunits, while others do not. Genetic mutations can affect protein structure and function. Proteins can be broadly categorized into two structural forms: globular and fibrous. The biuret test, which triggers a color change, is commonly used to detect the presence of proteins or peptides.
The slides include an end of lesson quiz. The answers are in the comment box below the slide.
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