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
lipid
protein
nucleic acid

Explanation:

• Carbohydrates: Composed of carbon, hydrogen, and oxygen. Sugars (like glucose) and starches are examples. They are the main energy source for living things.
• Lipids: Made of glycerol and fatty acids. Include fats, waxes, oils. Can be saturated or unsaturated. Provide cushioning for organs, long - term energy storage, and insulation (e.g., in cold - climate animals).
• Proteins: Composed of amino acids. Have structural roles (e.g., in bone and muscle), control reaction rates (enzymes), and examples include meat and fish.
• Nucleic Acids: Made of nucleotides. Store genetic code (DNA and RNA).

For the element check - mark:

• Carbohydrate: Contains Carbon, Hydrogen, Oxygen.
• Lipid: Contains Carbon, Hydrogen, Oxygen (some may have other elements in minor components, but mainly these three).
• Protein: Contains Carbon, Hydrogen, Oxygen, Nitrogen (some may have sulfur etc., but these four are common).
• Nucleic Acid: Contains Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus.

Answer:

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

For the element table:

• Carbohydrate: Carbon (✓), Hydrogen (✓), Oxygen (✓)
• Lipid: Carbon (✓), Hydrogen (✓), Oxygen (✓)
• Protein: Carbon (✓), Hydrogen (✓), Oxygen (✓), Nitrogen (✓)
• Nucleic Acid: Carbon (✓), Hydrogen (✓), Oxygen (✓), Nitrogen (✓), Phosphorus (✓)