1. Chemical Compounds in Cells
Chapter 3 section 3

2. Vocabulary: Element Compound Carbohydrate Lipid Protein Amino acid
Enzyme
Nucleic acid
DNA
RNA
Vocabulary:

3. Elements and Compounds
Elements: Cannot be broken down into simpler substances.
Smallest unit is an atom.

4. Two or more elements combine Smallest unit of many compounds is a
Molecule.

5. 2. The Compound Called Water
Chemical reactions in
the cell need water.
b. Examples:
-plants
-helps cells keep their
size
-helps keep temp of
cell from changing
rapidly

6. 3. Inorganic and Organic Compounds
Inorganic compounds
-does not contain
carbon.
-water, salt
b. organic compounds
-contain carbon
-examples:
carbohydrates, lipids,
proteins, nucleic acids

7. B. Carbohydrates Energy-rich organic compound
Made from carbon, hydrogen, oxygen

8. 3. Sugars and starches
4. Sugars are produced in
Plants.
5. Starches are large molecules that come from combined sugar molecules.

10. C. Lipids Fats, oils, waxes
2. Energy-rich also of carbon, hydrogen, oxygen
3. Contain more energy than carbohydrates

11. 4. Cells store energy in lipids for later use.
5. Lipids make up most of the cell membrane.

12. C. Proteins
Made of carbon, hydrogen, oxygen, nitrogen and maybe sulfur.

13. Structure of Proteins
Made of amino acids
20 different kinds
2. Functions of Proteins
Make up many of the organelles
Proteins known as enzymes help in the chemical reactions in the cell.
Enzymes help in digestion

14. D. Nucleic Acids
Contain instructions that cells need to carry out all functions of life.
Two Kinds:
DNA
RNA