1. Chapter 2 Section 3
The Chemistry of Life

2. Atom
Everything, living or non-living, is made of atoms
Smallest part of matter or element
Parts of the atom include the neutrons, electrons and protons

3. A substance made of one type of atom Found on the periodic table
Element
A substance made of one type of atom
Found on the periodic table

4. When two or more atoms join together
Molecule
When two or more atoms join together
H2O – water

5. 6 Common Elements in Living things
Carbon
Hydrogen
Nitrogen
Oxygen
Phosphorus
Sulfur C H N O P S

6. Base unit is called amino acids
Proteins
Base unit is called amino acids
Most abundant material in cell after water

7. Makes feathers, hair and spider webs Hemoglobin – oxygen to body parts
Protein Functions
Makes feathers, hair and spider webs
Hemoglobin – oxygen to body parts
Enzymes – chemical reactions

8. Cells use as a source for energy Simple or complex carbs
Carbohydrates
Made of sugar
Cells use as a source for energy
Simple or complex carbs
Simple = one or a few sugars
Complex= many sugars

9. Plants store complex carbohydrates as starch Found in potatoes

10. Compounds that cannot mix with water Store energy
Lipids
Compounds that cannot mix with water
Store energy

11. Structures are almost identical
Fats and Oils
Store energy
Structures are almost identical
Fats – solid at room temp
Oils – liquid at room temp

12. Make the cell membrane Phospholipids Water loving Water fearing

13. Made of base units called nucleotides Blue prints of life
Nucleic acids
Made of base units called nucleotides
Blue prints of life
DNA (deoxyribonucleic acid)

14. Adenosine triphosphate comes from broken down food molecules
The Cell’s Fuel
ATP
Adenosine triphosphate
comes from broken down food molecules