The Biochemical Basis of Life
In This A-Level Biology Lesson “The biochemical basis of life” you will be introduced to phylogenetic trees, the idea that biochemical similarities support the theory of evolution and the 4 biological molecules you must know.
Download the biochemical basis of life workbook for A-Level biology. Handwritten notes, knowledge check questions and exam style questions with properly written answers to help you learn, revise and succeed...
The Biochemical Basis of Life.pdf
Donate £5.00. Click The poster to show your support - Thank you for helping keep the site up and running!
What is the name of the diagram used to depict shared ancestry and evolutionary relationships?
Shared common ancestry can be depicted by means of a phylogenetic tree - a diagram that represents the relatedness and evolutionary history of a given species. The branch points on the diagram relate to a shared common ancestor between species. Despite the variety of life on Earth being extensive, ALL organisms share the same basic biochemistry.
Specifically, Carbon-based compounds such as: -
- Nucleotides, which form DNA and RNA
- Amino Acids, which form Polypeptides (proteins)
- Monosaccharides, which form Polysaccharides.
The 4 Biological Molecules you have to know are: -
1. Nucleic acids: - (DNA & RNA) Which are made up from Nucleotides.
2. Proteins (polypeptides): - Which are made up from Amino Acids.
3. Carbohydrates: Which are made up from Monosaccharides.
4. Lipids: Which are NOT polymers, since they are made up from Glycerol + Fatty Acids (not repeating monomers!)
Biomolecules Table.pdf