Question

1. which organic molecule is paired with its basic building block? a carbohydrate : amino acids b. nucleic acid : nucleotides c. lipid : monosaccharides d. protein : fatty acids 6. which is a function of lipids? a to supply cells with quick - release energy b. to provide the body with insulation c. to store genetic information d. to regulate cell processes 7. which organic molecules supply energy to cells? a carbohydrates and nucleic acids b. proteins and nucleic acids c. lipids and carbohydrates d. lipids and nucleic acids 8. if nucleic acids code for proteins, which is a function of proteins? a to store hereditary information b. to store energy for long - term use c. to provide a quick supply of energy d. to provide structure and transport materials in cells 9. why are proteins important to the survival of animals? a proteins provide the body with energy. b. proteins provide energy storage for cells. c. proteins provide genetic information to cells. d. proteins provide structural functions for the body.

Explanation:

• Question 5: Carbohydrates are made of monosaccharides, nucleic acids are made of nucleotides, lipids are made of fatty acids and glycerol, and proteins are made of amino acids.
• Question 6: Lipids can provide insulation. Carbohydrates supply quick - release energy, nucleic acids store genetic information, and proteins regulate cell processes.
• Question 7: Carbohydrates are the main source of quick - release energy, and lipids are for long - term energy storage. Nucleic acids do not supply energy directly.
• Question 8: Proteins provide structure (e.g., in muscles, hair) and can transport materials (e.g., hemoglobin transports oxygen). Nucleic acids store hereditary information, lipids store energy long - term, and carbohydrates provide quick energy.
• Question 9: Proteins have structural functions (e.g., collagen in connective tissues). Carbohydrates provide energy, lipids store energy, and nucleic acids provide genetic information.

Answer:

1. B. nucleic acid : nucleotides
2. B. to provide the body with insulation
3. C. lipids and carbohydrates
4. D. to provide structure and transport materials in cells
5. D. Proteins provide structural functions for the body.