Biological Polymers: Build, Break, and Function
0:00 / 4:28
What Is a Biological Polymer?
0:00 - 0:32
Define monomers, polymers, and macromolecules using a bead-and-necklace model.
The Four Major Molecule Groups
0:32 - 1:07
Map carbohydrates, nucleic acids, proteins, and the special case of lipids.
Building by Dehydration Synthesis
1:07 - 1:39
Follow glucose units as H and OH leave, water forms, and a covalent bond joins them.
Structure Creates Function
1:39 - 2:15
See how type, sequence, bonding, and branching produce molecular diversity.
Breaking by Hydrolysis
2:15 - 2:48
Add water to maltose and track the formation of two glucose monomers.
Build Versus Break
2:48 - 3:22
Compare water movement and typical energy tendencies in the two reactions.
Enzymes Make It Practical
3:22 - 3:56
Connect the chemistry to digestion through maltase, lipases, and peptidases.
The Working Mental Model
3:56 - 4:28
Consolidate the relationships among units, connections, structure, and function.