Questions: Select all of the functions of fats in animals. fuel the brain's rapid growth in the first few years of life act as enzymes in organelles called lysosomes source of energy key structural components of hair, nails, and bones required for the use of some vitamins and minerals cushion and insulate organs

The correct answers are:

• source of energy
• required for the use of some vitamins and minerals
• cushion and insulate organs

Explanation for each option:

• fuel the brain's rapid growth in the first few years of life: This is not a primary function of fats. While fats are important for brain development, they do not specifically fuel rapid growth.
• act as enzymes in organelles called lysosomes: Fats do not act as enzymes. Enzymes are proteins that catalyze biochemical reactions.
• source of energy: Correct. Fats are a major source of energy for animals.
• key structural components of hair, nails, and bones: Incorrect. Proteins, such as keratin, are the key structural components of hair and nails, while bones are primarily composed of minerals like calcium and phosphorus.
• required for the use of some vitamins and minerals: Correct. Fats are necessary for the absorption of fat-soluble vitamins (A, D, E, and K).
• cushion and insulate organs: Correct. Fats provide cushioning and insulation for organs, protecting them from physical shock and helping to maintain body temperature.

Summary: The functions of fats in animals include being a source of energy, being required for the use of some vitamins and minerals, and cushioning and insulating organs.