Question

match the letter of the organic compound with the phrase that describes it:
a. carbohydrates b. lipids c. proteins d. nucleic acids

1. _____ provides cushion and support of internal organs
2. _____ stores the genetic code
3. _____ used for structure and support - bone and muscle tissue
4. _____ long - term storage of energy
5. _____ main source of energy for living things
6. _____ controls the rates of reactions and regulates cell processes
7. _____ includes both sugars and starches
8. _____ can be saturated or unsaturated
9. _____ examples include fats, waxes, and oils
10. _____ examples include meat and fish
11. _____ are made of amino acids
12. _____ are made of glycerol and fatty acids
13. _____ contains a lot of this; is an adaptation for animals living in cold climates as insulation
14. _____ examples include enzymes
15. _____ dna and rna
16. _____ made of nucleotides

put a check mark in the boxes of elements that the following organic compounds include:
organic compound carbon hydrogen oxygen nitrogen phosphorus
carbohydrate
lipid
protein
nucleic acid

Explanation:

• 1. Lipids (b): Lipids provide cushioning and support to internal organs.
• 2. Nucleic acids (d): DNA and RNA (types of nucleic acids) store the genetic code.
• 3. Proteins (c): Proteins are used for structure and support like in bone and muscle tissue.
• 4. Lipids (b): Lipids are for long - term energy storage.
• 5. Carbohydrates (a): Carbohydrates are the main source of energy for living things.
• 6. Proteins (c): Enzymes (which are proteins) control reaction rates and cell processes.
• 7. Carbohydrates (a): Carbohydrates include sugars and starches.
• 8. Lipids (b): Lipids (fats) can be saturated or unsaturated.
• 9. Lipids (b): Fats, waxes, and oils are lipids.
• 10. Proteins (c): Meat and fish are rich in proteins.
• 11. Proteins (c): Proteins are made of amino acids.
• 12. Lipids (b): Lipids (triglycerides) are made of glycerol and fatty acids.
• 13. Lipids (b): Lipids (fat) act as insulation for animals in cold climates.
• 14. Proteins (c): Enzymes are proteins.
• 15. Nucleic acids (d): DNA and RNA are nucleic acids.
• 16. Nucleic acids (d): Nucleic acids are made of nucleotides.

For the element - inclusion part:

• Carbohydrate: Contains Carbon, Hydrogen, Oxygen.
• Lipid: Contains Carbon, Hydrogen, Oxygen (some may have other elements in complex lipids, but generally).
• Protein: Contains Carbon, Hydrogen, Oxygen, Nitrogen.
• Nucleic Acid: Contains Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus.

Answer:

1. b
2. d
3. c
4. b
5. a
6. c
7. a
8. b
9. b
10. c
11. c
12. b
13. b
14. c
15. d
16. d

For the element - inclusion table (assuming check - marks):

Organic compound	Carbon	Hydrogen	Oxygen	Nitrogen	Phosphorus
Lipid	✓	✓	✓
Protein	✓	✓	✓	✓
Nucleic Acid	✓	✓	✓	✓	✓