1. 1. Molecules –
Made up of atoms
Found inside of cells, smaller than a cell
Thousands of different types living inside one cell
Four basic categories of molecules:
Carbohydrates
Proteins
Nucleic acids
Lipids (fats)

2. 2. Carbohydrates –
Made up of carbon, hydrogen, and oxygen
Examples include sugar (glucose) and starch
Carbohydrates are found in plants (cellulose) and even in your textbook

3. 3. Proteins –
Made up of amino acids
Amino acids link together to form protein chains.
The order of amino acids is important as is which amino acids are included.
Example: enzymes (catalysts – change)

4. 4. Nucleic Acids –
Made up of groups of nucleotides
Two types of nucleic acids: DNA and RNA
The arrangement of nucleotides in DNA is a code.
The DNA code determines which amino acids will be in a protein.
RNA helps in protein synthesis by using the coded instructions in DNA.

5. 5. Lipids (Fats)-
Used for energy storage
Many parts of a cell are made of lipids/fats