Biology STAAR (State of Texas Assessments of Academic Readiness) Practice Test

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Study for the Biology STAAR Test. Improve your skills with flashcards and multiple choice questions, each question is accompanied by hints and explanations. Prepare for success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is homeostasis?

A process for cellular respiration
A mechanism for cell division
Maintaining a stable internal environment
A type of cell transport

The correct answer is: Maintaining a stable internal environment

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions. This concept is crucial for the survival of cells and, consequently, the entire organism. Various physiological processes, such as temperature regulation, pH balance, and the concentration of ions, are examples of homeostatic mechanisms that allow organisms to function optimally. The other options refer to different biological processes: cellular respiration is related to energy production within cells, cell division pertains to the replication and distribution of genetic material, and cell transport involves the movement of substances across cell membranes. While all these processes are essential for life, they do not capture the essence of homeostasis, which is fundamentally about stability and balance within biological systems.