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

Disable ads (and more) with a membership for a one time $2.99 payment

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!

Start Multiple Choice Practice Test
Start Flash Cards

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!

Practice this question and more.

What are carbohydrates primarily used for in living organisms?

  1. Energy storage

  2. Cell structure maintenance

  3. Genetic information storage

  4. Production of hormones

The correct answer is: Energy storage

Carbohydrates serve as the primary source of energy for living organisms. They are composed of sugars and starches that can be quickly converted into glucose, which is utilized by cells to fuel various biochemical processes. This energy is critical for muscle contraction, neural function, and maintaining homeostasis among other cellular activities. While carbohydrates do play roles in other functions—like providing structural support in plants through cellulose—a significant part of their biological function revolves around energy production and storage. The quick availability of energy from carbohydrates makes them an essential macronutrient for all living organisms, allowing them to perform vital tasks efficiently.

More Questions Like This