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Learn about the different levels of protein structure and how they contribute to the protein's overall shape and function.
Khan Academy
Different types of proteins. The structure and properties of amino acids. Formation of peptide bonds.
Overview of protein structure (video) | Khan Academy
Primary, secondary, tertiary and quaternary protein structure. Beta pleated sheets and alpha helices.
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The genetic code - Khan Academy
The genetic code links groups of nucleotides in an mRNA to amino acids in a protein. Start codons, stop codons, reading frame.
Khan Academy
Review the properties, structure, and function of biological macromolecules in AP Biology.
DNA function & structure (with diagram) (article) | Khan Academy
Lesson 5: DNA and DNA replication. DNA questions. DNA structure and function. Nucleic acids. DNA. Molecular structure of DNA. Antiparallel structure of DNA strands. Leading and lagging strands in DNA replication. Speed and precision of DNA replication.
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Types of signaling molecules and the receptors they bind to on target cells. Intracellular receptors, ligand-gated ion channels, G protein-coupled receptors, and receptor tyrosine kinases.
Khan Academy
Khan Academy
Khan Academy
Learn about diffusion and passive transport in cells, including facilitated diffusion and how it works.