Questions: Question 25 (Multiple Choice Worth 4 points) (02.03 MC) What is the function of the lysosome in eukaryotic cells? The lysosome uses messenger RNA to synthesize proteins. The lysosome secretes enzymes to break down large molecules. The lysosome modifies proteins and sends them to where they are needed. The lysosome takes in nutrients and breaks them down to provide energy for the cell.

The answer is the second one: The lysosome secretes enzymes to break down large molecules.

Explanation for each option:

1. The lysosome uses messenger RNA to synthesize proteins.

   • This is incorrect. The synthesis of proteins using messenger RNA is a function of ribosomes, not lysosomes.

2. The lysosome secretes enzymes to break down large molecules.

   • This is correct. Lysosomes contain hydrolytic enzymes that break down large molecules, such as proteins, lipids, nucleic acids, and carbohydrates, into smaller components.

3. The lysosome modifies proteins and sends them to where they are needed.

   • This is incorrect. The modification and sorting of proteins are functions of the Golgi apparatus, not lysosomes.

4. The lysosome takes in nutrients and breaks them down to provide energy for the cell.

   • This is incorrect. While lysosomes do break down macromolecules, the primary organelle responsible for energy production in the cell is the mitochondrion, which generates ATP through cellular respiration.

Summary: The lysosome's primary function in eukaryotic cells is to secrete enzymes that break down large molecules.