SAT Practice Test

The SAT Biology Subject Test—also known as Biology E/M—was a focused, one-hour multiple‑choice exam administered by the College Board. Students chose between two versions: Biology-E (Ecological) or Biology-M (Molecular). Sixty questions were common to both versions, with a final twenty tailored to the test type. Scored on a 200–800 scale, it assessed high‑school–level biology knowledge and analytical skills.

Introduced in the 1990s, SAT Subject Tests provided a platform for showcasing aptitude in specific disciplines. Though discontinued in 2026, many students took Biology E/M to complement SAT or AP scores, demonstrate interest in STEM fields, and gain an edge in admissions.

Key Takeaways

Free SAT Biology Practice Test Online

• SAT Biology tested both general biology and specialized ecological or molecular concepts with 80 multiple-choice questions in one hour.

• Preparation involved reviewing high-school biology coursework, analyzing graphs and data, and practicing test-taking strategies.

• Although the test no longer exists, understanding its structure and utility remains beneficial for future subject tests or AP exam prep.

• Careers in biology-related fields—such as research, healthcare, environmental science, and education—still value strong foundational knowledge.

• Cost for SAT Subject Tests was $26 registration fee plus $22 per test, with fee waivers available for qualifying students.

What Is the SAT Biology Subject Test?

The SAT Biology Subject Test assessed mastery of key biological concepts and analytical data interpretation.

• Included 60 core biology questions plus 20 elective questions based on your chosen version—Ecological or Molecular

• Covered topics such as cell biology, genetics, evolution, ecology, physiology, and biochemistry

• Scored from 200–800 based on correct answers minus points for incorrect guesses, so strategy and accuracy were critical

Though discontinued in June 2026, the strategy fundamentals remain relevant for AP Biology and other question‑based tests.

How to Become Prepared

Although the SAT Biology test is defunct, its preparation techniques remain useful for testing success:

• Build foundational knowledge: Ensure mastery in both molecular and ecological biology via classroom or self-study.

• Use official practice materials: Full-length timed tests are essential to simulate actual conditions and refine pacing.

• Learn data interpretation: Strengthen skills in reading charts, graphs, and experimental descriptions.

• Analyze errors: Review incorrect answers to identify conceptual gaps and test-taking weaknesses.

• Focus on version decision: Biology-M favors cellular biology; Biology-E emphasizes ecosystems—align choice with strengths.

• Hone test-taking technique: Practice bubbling strategy; blank questions are safer than poorly reasoned guesses due to penalization.

• Link to AP prep: Use AP-style content to deepen understanding and prepare for other standardized tests.

Jobs Description and Career Pathways

Though the SAT Biology test no longer offers college perks, strong biology proficiency supports entry into science-focused careers.

Relevant Occupations:

• Medical Researchers and Lab Technicians – manage experiments, analyze biological data, ensure procedures align with scientific standards

• Environmental Scientists and Ecologists – study ecosystems, support conservation efforts, conduct field surveys and data interpretation

• Healthcare Professionals – nurses, physicians, and public health practitioners rely on biological expertise for patient care

• Biology Educators – teach subject matter from middle school to college level, develop learning materials, and manage laboratory setups

Subject‑test understanding, data analysis, and knowledge integration are valuable in preparing for higher education and professional work.

Salary Expectations

While subject test scores don’t determine income, careers built on solid biology knowledge do.

Typical salary ranges in the U.S.:

• Lab Technician or Research Assistant: $35,000–$50,000

• Environmental Scientist: $45,000–$70,000

• Registered Nurse: $60,000–$90,000

• Medical Technologist: $50,000–$80,000

• Biology Teacher (high school): $50,000–$75,000

Advanced roles requiring graduate degrees (e.g., research scientist, physician, university professor) can reach six figures. A strong biology foundation opens pathways to these roles.

Exam Cost (Historical)

Understanding the SAT Biology fee structure helps illustrate logistics behind standardized testing and financial access.

• Registration fee: approximately $26 covers test date, regardless of the number of subject tests taken

• Subject Test fee: approximately $22 per test (e.g., Biology)

• Optional services: late registration ($38), test date change ($29), score reports ($12 each), and fee waivers for eligible students

Though discontinued, understanding fees highlights the logistical and financial considerations in test prep.

Conclusion

Even though the SAT Biology Subject Test is no longer administered, the preparation framework and analytical skills it demanded remain highly relevant. Mastery in biology supports success in college admission tests, AP exams, college readiness, and careers in science, health, and environmental fields.

By focusing on concept mastery, data interpretation skills, and testing strategies, students can excel in biology‑based assessments and lay the groundwork for future academic and professional achievement.

Pros and Cons at a Glance

Sample SAT - Biology Subject Test Practice Questions

Try these questions from our free SAT - Biology Subject Test practice tests. The correct answer and an explanation follow each question.

1. Which of the following processes is essential for converting atmospheric nitrogen into a form usable by plants?

   • A. Denitrification
   • B. Nitrogen fixation
   • C. Photosynthesis
   • D. Transpiration

Answer: B. Nitrogen fixation

Nitrogen fixation is the process by which atmospheric nitrogen (N2) is converted into ammonia (NH3) or other nitrogenous compounds that plants can absorb and utilize. This process is primarily carried out by certain bacteria.

Answer: B. forces water and solutes to pass through the selectively permeable membrane of endodermal cells.

The Casparian strip is a waxy, waterproof band that blocks the apoplastic pathway (movement through cell walls). This forces all water and dissolved minerals to cross the plasma membrane of an endodermal cell (the symplastic pathway) before entering the vascular cylinder (xylem). This ensures that the plant has selective control over which substances enter its transport system.

Answer: B. One parental strand and one newly synthesized strand.

The semiconservative model states that each of the two parental DNA strands acts as a template for a new strand to be synthesized. The result is two new DNA molecules, each composed of one original (parental) strand and one newly synthesized strand. 'Semiconservative' means half of the original molecule is conserved in each new molecule.

Answer: C. Water cycle

The water cycle, also known as the hydrological cycle, describes the continuous movement of water on, above, and below the surface of the Earth. This vital process involves evaporation, condensation, precipitation, and runoff, ensuring the distribution and availability of water throughout all ecosystems. It is a fundamental biogeochemical cycle that sustains life.

Take the full SAT - Biology Subject Test practice test