vendredi 2 octobre 2026

 

Biological Molecules

 

video 15'19 : https://youtu.be/PYH63o10iTE Biological Molecules Paul Andersen describes the four major biological molecules found in living things. He begins with a brief discussion of polymerization. Dehydration synthesis is used to connect monomers into polymers and hydrolysis breaks them down again. The major characteristics of nucleic acids are described as well as there directionality from 3' to 5' end. Protein structure is describes as well as the structure of its monomers; amino acids. The carboxyl and amino ends of a protein are described. The major groups of lipids are included with a brief discussion of saturated, unsaturated and trans fats. Finally carbohydrates and their sugar monomers are discussed.

quizz : https://quizizz.com/admin/quiz/5c9d5baab2e4c6001afc0f9f/biomolecules

tests : https://www.monash.edu/student-academic-success/chemistry/medicinal-chemistry/protein-structure


macromolecule

roles

samples

polymer

monomer

atoms

Carbohydrates


energy




glucose, amylose, cellulose, starch, glycogen



CHO

Lipids

Cell membrane, energy





Cholesterol, phospholipid, arachidic, stearic, oleic… fatty acids saturated or unsaturated

triglyceride

fatty acid

CHO

Proteins

Building blocks of life, enzymes





Myoglobin, Trypsin


amino acids

CHON

Nucleic acids

Genetic information = gene





DNA

RNA


Nucleotide = PSB(ATGC)

CHONP


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