Which of the following yellowish structures in the human body primarily serve as an energy reserve?

• A. Mitochondria
• B. Adipose tissue
• C. Golgi apparatus
• D. Lysosomes

Answer: (B)

Verified step by step guidance

1. Understand the question: The problem is asking which structure in the human body primarily serves as an energy reserve. This means we need to identify the structure that stores energy for later use.
2. Review the options: The options provided are mitochondria, adipose tissue, Golgi apparatus, and lysosomes. Each of these has a specific function in the body.
3. Recall the function of mitochondria: Mitochondria are known as the 'powerhouses' of the cell because they generate energy in the form of ATP through cellular respiration. However, they do not store energy as a reserve.
4. Recall the function of adipose tissue: Adipose tissue is a type of connective tissue that stores energy in the form of fat. It acts as the primary energy reserve in the human body.
5. Eliminate incorrect options: Golgi apparatus is involved in modifying, sorting, and packaging proteins, while lysosomes are responsible for breaking down waste materials and cellular debris. Neither of these serves as an energy reserve. Therefore, the correct answer is adipose tissue.