Understanding Lysosomes

Lysosomes are membrane-bound vesicles containing hydrolytic enzymes that degrade various biomolecules. These enzymes are formed in the endoplasmic reticulum and transported to the Golgi apparatus. Lysosomes originate from the Golgi apparatus and play a crucial role in breaking down ingested particles like viruses and bacteria through phagocytosis. They also fuse with old organelles, such as mitochondria, to recycle and destroy these structures.

What is the primary function of the hydrolytic enzymes found in lysosomes?

• To synthesize proteins

• To degrade macromolecules

• To transport nutrients

• To store energy

Where are the hydrolytic enzymes of lysosomes initially formed?

• In the mitochondria

• In the Golgi apparatus

• In the nucleus

• In the endoplasmic reticulum

During phagocytosis, what does a lysosome fuse with to deliver its enzymes?

• A ribosome

• A phagosome

• A chloroplast

• A vacuole

Which cellular process involves lysosomes breaking down ingested bacteria?

• Mitosis

• Glycolysis

• Phagocytosis

• Photosynthesis

What happens when lysosomes fuse with old mitochondria?

• They generate new mitochondria

• They initiate cell division

• They destroy and recycle the mitochondria

• They release energy