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2 combined forces (electrochemical gradient) drive diffusion of ions across a membrane; Electrogenic pump is a protein that generates voltage across a membrane; Ex.: Sodium-potassium pump; Pushes...
AP Biology glossary of key terms with definitions, must-know facts, and related terms you need to know for your exam.
The AP® Biology exam is a 3-hour, end-of-course test comprised of 60 multiple-choice questions, for which you will have 1 hour and 30 minutes (this counts for 50% of your score) and 6 free-response questions, for which you will have 1 hour and 30 minutes (this counts for 50% of your score). The exam covers the following course content categories:
AP® Biology. Our extensive collection of resources is the perfect tool for students aiming to ace their exams and for teachers seeking reliable resources to support their students' learning journey. Here, you'll find an array of study guides, exam questions, fully explained model answers, past exam papers and more, meticulously organised to ...
Download free-response questions from past AP Biology exams, along with scoring guidelines, sample responses from exam takers, and scoring distributions.
Study guides with what you need to know for your class on AP Biology. Ace your next test.
We have links to all of the best online AP Biology practice exams. These resources will provide thousands of challenging practice questions to work through. Choose from the listing below to get started with your test prep right now! Hundreds of multiple choice questions, all organized by topic.
