CLEP Biology practice test

CLEP Biology Practice Test and Biology Practice Questions From Your Own Notes and PDFs

Upload your biology textbook, lecture notes or study guide, and the AI writes unlimited CLEP Biology practice questions with an answer key and explanations in seconds. Drill all three content areas, clear the 115-question exam, and turn a full year of general biology into 6 credits you never pay tuition for.

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In short: to build CLEP Biology practice questions, upload your biology notes, a textbook chapter or a study guide and the AI writes multiple-choice questions with an answer key and explanations in seconds. CLEP Biology is one of the highest-value exams in the whole program: it covers a full year of college general biology, so the American Council on Education recommends 6 semester hours of credit rather than the usual 3. It has approximately 115 questions in 90 minutes, all multiple choice with five answer options (A through E), split almost evenly across organismal biology (34 percent), molecular and cellular biology (33 percent) and population biology (33 percent). Scores run 20 to 80, and 50 is the score ACE recommends for credit. No calculator is provided, so Hardy-Weinberg problems get worked by hand.

Last updated July 2026

Questions
~115 in 90 minutes
Credits recommended
6 (score of 50)
Practice questions
Unlimited

What a CLEP Biology practice question generator does

Cover a year of biology without rereading a year of biology

CLEP Biology is a breadth problem. It compresses two semesters of general biology into 90 minutes, which means the exam can ask you about the light reactions of photosynthesis, then the mammalian placenta, then island biogeography, in the space of three questions. You cannot deep-dive your way through that. You have to build broad, fast recall across the whole map. Upload the material you are already studying, a chapter on cellular respiration, your notes on Mendelian genetics, a review sheet on ecological succession, and you can use an AI MCQ maker from a textbook to get fresh questions every time. Miss one and the explanation tells you why, so the next set drills exactly the systems you keep blanking on.

CLEP Biology content areas and weights

Three content areas split the exam into near-perfect thirds. There is no dominant topic to prioritize and no safe topic to skip, which is exactly what makes broad practice the right study strategy.

Content area What it covers Weight
Organismal biologyPlant structure, function, reproduction and hormones. Animal systems (digestive, gas exchange, skeletal, nervous, circulatory, excretory, immune), homeostasis, hormonal control, animal reproduction and development, and the principles of heredity.34%
Molecular and cellular biologyChemical composition of organisms, cells and organelles, enzymes and their regulation, energy transformations (glycolysis, respiration, photosynthesis), cell division, and the chemical nature of the gene (replication, transcription, translation, mutation, viruses).33%
Population biologyEcology (energy flow, biogeochemical cycles, population growth, community structure, succession, biomes), evolution (natural selection, Hardy-Weinberg, speciation, genetic drift), behavior, and social biology.33%

Approximately 115 questions in 90 minutes, scored on a 20 to 80 scale, with some unscored pretest questions mixed in. College Board publishes these three top-level weights but does not publish sub-percentages within each area, so treat any prep site that gives you a precise breakdown of "12 percent genetics" as inventing numbers. The exam also tests scientific methodology and data interpretation, which is why some questions come in sets built around a shared table or graph.

The detail that makes this exam worth more than most: 6 credits

Most CLEP exams are recommended for 3 semester hours. Biology is recommended for 6, because it covers a full-year general biology sequence rather than a single-semester course. Some prep sites describe it as a one-semester exam, which is wrong and leads people to underprepare for the breadth and to undervalue the payoff. At a score of 50 you are looking at two courses' worth of credit from one 90-minute sitting, and the exam fee is $97. Very little else in American higher education prices credit that way.

The flip side is honest: 6 credits means a 6-credit workload of material. You are responsible for everything a two-semester intro sequence covers, which is why the three content areas sit at almost exactly a third each. There is no shortcut around the breadth, but there is a much faster way through it than rereading a 1,200-page textbook, which is high-volume retrieval practice across every chapter.

How to make CLEP Biology practice questions from your notes

1
Upload your material
Drop in a textbook chapter, your lecture notes, or a study guide. Scanned and handwritten pages are read with OCR.
2
Set the drill
Pick the question count and difficulty. Aim a set at genetics, photosynthesis, animal systems or ecology so the focus matches your weak area.
3
AI writes questions
The AI reads your content and writes CLEP-style multiple-choice questions with an answer key and an explanation for each one.
4
Review and repeat
Score the set, read the explanation behind every miss, then regenerate a tighter drill on just the processes and terms you got wrong.

Why practice questions work so well for biology

Biology is the subject where rereading feels most productive and works least well. The prose is readable, the diagrams are clear, and closing the chapter on the Krebs cycle leaves you genuinely convinced you know the Krebs cycle. Then a question asks which molecule enters the cycle and where the carbon dioxide comes off, and the conviction evaporates. Recognition and recall are separate skills. The exam measures the second one, and only retrieval practice builds it.

Breadth makes this doubly true here. Because the exam covers a full year in three equal thirds, your real enemy is the topic you skimmed in week nine and never revisited. Practice questions surface those gaps immediately and cheaply, which is worth more than another pass through the chapters you already like. Generating sets from your own notes means every question is drawn from the material your course actually emphasized, and because the questions are fresh each time you cannot memorize an answer key by accident.

Two format details are worth building into your practice. First, the real exam gives you five answer choices, A through E, while a lot of third-party practice tests are written with four. That is not a trivial difference: it drops a blind guess from 25 percent to 20 percent, and it gives the test writers room for one more plausible distractor. Second, there is no calculator, and there is no penalty for a wrong answer. So practice Hardy-Weinberg by hand, and never leave a question blank.

The payoff is unusually good. The exam fee is $97 plus whatever your test center charges to administer it, or a $30 remote proctoring fee if you test from home. Modern States offers a free online biology course that comes with a voucher covering the $97 fee. A score of 50, the level the American Council on Education recommends, earns 6 semester hours at the roughly 2,900 colleges that accept CLEP, and a 56 is the B-level mark for schools that grant credit at that tier. Each college sets its own required score and credit policy, so confirm yours before registering. This generator is a study aid rather than a replacement for the official CLEP materials, which show the real question style.

Who uses this to prep for CLEP Biology

Students clearing a lab science requirement

Most degrees require a natural science sequence. Six credits from one exam is the fastest legitimate way through it. Check first whether your school requires an actual lab component alongside the CLEP credit.

Pre-health and nursing applicants

Building prerequisites before a nursing or allied health program. Confirm your target program accepts CLEP for the biology prerequisite, since some require graded coursework instead.

Adult learners and returners

Finishing a degree around a job. Turn a review book or old course notes into unlimited practice and bank two courses' worth of credit on your own schedule.

CLEP Biology questions, answered

How many questions are on the CLEP Biology exam?
The CLEP Biology exam has approximately 115 questions answered in 90 minutes. Some of those are unscored pretest questions that do not count toward your score, and College Board does not publish how many. Every question is multiple choice with five answer choices lettered A through E, and nothing is deducted for a wrong answer. If your notes are handwritten or scanned, run them through an OCR tool like DocuOCR first so the generator can read every page.
How many credits is CLEP Biology worth?
Six semester hours, not three. CLEP Biology covers a full year of college general biology rather than a single semester, so the American Council on Education recommends 6 semester hours of credit at a score of 50. That makes it one of the highest-value CLEP exams you can take. Each college sets its own credit policy, so confirm the amount and required score first.
What score do you need to pass the CLEP Biology exam?
CLEP scores run on a scale of 20 to 80. The American Council on Education recommends a score of 50 for credit, treated as the equivalent of a C in the course. A score of 56 is the B-level recommendation for schools that grant credit at that level. Each college sets its own required score, and some ask for more than 50, so confirm your school's CLEP policy before you register.
Is the CLEP Biology exam hard?
It is one of the broader CLEP exams because it compresses a full year of general biology into 90 minutes. The difficulty is breadth rather than depth: you need working familiarity with cellular chemistry, genetics, plant and animal systems, ecology and evolution. It also expects you to interpret data tables and graphs, not just recall facts, and it gives you no calculator. College Board does not publish pass rates for any CLEP exam, so treat percentages you see quoted elsewhere with suspicion.
Can you use a calculator on the CLEP Biology exam?
No. Biology is not one of the CLEP exams that provides an on-screen calculator, and you cannot bring your own into the testing room. Only Calculus, Chemistry, College Algebra, College Mathematics, Financial Accounting and Precalculus include one. That matters most for Hardy-Weinberg population genetics problems, which you will need to work by hand.
What is on the CLEP Biology exam?
The exam covers three content areas in nearly equal thirds: organismal biology (34 percent), molecular and cellular biology (33 percent) and population biology (33 percent). Together those span cellular chemistry, enzymes, respiration and photosynthesis, cell division, genetics, plant and animal structure and function, heredity, ecology, evolution and behavior.
Is CLEP Biology multiple choice?
Yes, entirely, with no essay section. One detail worth knowing: CLEP Biology uses five answer choices lettered A through E, not four. Many third-party practice tests are written with four options, which quietly changes your blind-guess odds from the real 20 percent to 25 percent. Some questions are set based, where a shared data table or diagram feeds two or more questions.
How much does the CLEP Biology exam cost?
The CLEP exam fee is $97. A test center also charges its own administration fee, which each center sets individually and College Board does not publish, or you pay a $30 remote proctoring fee to test from home. Modern States offers a free online biology course that comes with a voucher covering the $97 fee. For 6 credits, this is among the cheapest credit per dollar in higher education.

PDFQuiz is not affiliated with, endorsed by, or sponsored by College Board, CLEP, Modern States, or the American Council on Education. CLEP is a registered trademark of College Board. This generator builds practice questions from material you upload and is a study aid, not a replacement for the official CLEP study materials.

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Stacking credits by exam? Clear a math requirement with the CLEP College Mathematics practice test generator, or place into Calculus with the CLEP Precalculus practice test generator. Add a social science credit with the CLEP Psychology practice test generator or the CLEP Sociology practice test generator. Using biology as a prerequisite for a nursing program? The same workflow powers the TEAS practice test generator and the HESI A2 practice test generator.

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Upload your biology notes or a textbook chapter and generate CLEP-style questions in under a minute. Keep drilling across all three content areas until 6 credits are safe.

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