Biology STAAR Practice Test 2025 - Free State of Texas Assessments of Academic Readiness Practice Questions and Study Guide

Question: 1 / 400

What is the main function of lysosomes in a cell?

Protein synthesis

Energy production

Cell division

Digestive processes

Lysosomes play a crucial role in the cell by functioning primarily in digestive processes. These organelles contain a variety of enzymes that break down waste materials, cellular debris, and foreign invaders, such as bacteria. By digesting these components, lysosomes help keep the cell clean and functioning optimally. They are involved in the degradation of macromolecules, recycling cellular components, and maintaining overall cellular health.

In addition to this core function, lysosomes also participate in programmed cell death (apoptosis) and can help in the defense against pathogens, making them vital for the proper maintenance and survival of the cell. Their role in digestion allows the cell to efficiently handle and recycle substances, which is essential for homeostasis and energy management within the cell environment.

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