IB Biology Exam Prep

Maintained and Updated as of 2024

59 free practice test questions for the International Baccalaureate (IB) Biology Exam

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IB Biology Practice Exam - Updated 2022!

The International Baccalaureate (IB) Biology exam is part of IB’s diploma program aimed at preparing students aged 16-19 for university level courses. The IB Biology diploma exam is assessed through both internal and external assessment. The number of questions per section is contingent upon candidate level; candidates may be at Standard Level (SL) or Higher Level (HL). 
 The IB Biology external assessment consists of three papers: 
 •        Paper 1 contains either 30 questions (SL) or 40 questions (HL) 
 •        Paper 2 consists of one data based question, short answer questions, and one (SL) or two (HL) extended response questions 
 •        Paper 3 consists of several short answer questions, with an HL addition of 1 long form question 
 The IB Biology internal assessment consists of demonstrations of practical work. 
 Disclaimer: This content is provided for informational purposes only. It has not been edited, fact checked or updated. This content is neither affiliated nor endorsed by The International Baccalaureate (IB) or any other official agency. These questions were written by a third party test prep company and licensed by PracticeQuiz for use on this site. Please use at your own discretion. 


There are about 45 questions on the standard level IB Biology Exam and about 55 questions on the higher level IB Biology exam. Both versions of the exam are divided into three categories: Multiple Choice (30 questions for standard level, 40 questions for higher level), Written Response (5-7 questions for standard level, 6-8 questions for higher level), and Data Analysis (6-8 questions for standard level and higher level).

The standard level IB Biology Exam is three hours and 15 minutes long, and the higher level IB Biology Exam is four hours and 30 minutes long.

A good passing score for the IB Biology Exam is typically considered to be 24 or higher.

A passing IB Biology Exam score can help students both prepare for college and gain college credit.

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Ted Chan

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Ted Chan is the Managing Editor of PracticeQuiz.com. Ted has experience as a journalist and a writer, including editorial or content production roles at ESPN, Better Business Bureau, The Boston Globe, and Forbes. Ted holds a BA from Swarthmore College with High Honors, and a MBA from the MIT Sloan School of Management. Ted also studied at the Harvard Business School, earning a Certificate in Value-based Health Care Delivery.

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