Final answer:
Lysosomes are the correct answer as they contain digestive enzymes essential for the breakdown of nutrients, which provide energy for cellular processes and play an important role in recycling cellular components and defending against pathogens.
Step-by-step explanation:
Organelles known as lysosomes contain enzymes that initiate the breakdown of nutrients, which are the raw materials for generating energy for cell activities. They feature a variety of hydrolytic enzymes, such as lipases, proteases, and nucleases, that degrade organic polymers.
Lysosomes perform vital functions within the cell, including the degradation of old proteins, foreign materials, and waste products. They also take part in phagocytosis, where foreign substances are ingested and destroyed within the cell, and play a role in apoptosis. These characteristics highlight the importance of lysosomes in maintaining cell health and defending against pathogens.
Lysosomes are part of the endomembrane system and are essential for breaking down foreign material such as bacteria ingested by white blood cells through a process known as phagocytosis. After engulfment, the material is delivered to the lysosome where it is digested by enzymes.
Therefore, the answer to the question is (B) Lysosomes, as they contain enzymes that start the breakdown of nutrients that serve as energy sources for cellular processes.