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AP Biology · Unit 1Question 1 of 4

Which organelle is responsible for producing ATP through cellular respiration?

ANucleus
BMitochondria
CRibosome
DGolgi Apparatus
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We know you have lots of questions about AP Exams. Here are answers to some of the most frequent ones students ask.

AP exams are scored on a 1-5 scale. A 5 signals college-level mastery. Raw scores from multiple-choice and free-response sections are combined using a formula that varies by exam. Most colleges grant credit for scores of 3, 4, or 5.
Most AP exams run between 2 and 3.5 hours. AP Biology is about 3 hours, AP Human Geography is around 2 hours 15 minutes, and AP CSP is about 2 hours.
AP scores are typically released in mid-July, about two months after the exam window. You can view scores through the College Board online score portal.
Yes. Students can retake any AP exam in a subsequent year. You cannot retake the same exam in the same year. If you score higher, you control which scores are reported to colleges.
The College Board currently offers 38 AP courses and exams across sciences, social sciences, math, English, history, world languages, and the arts.
Yes. Strong AP scores (3-5) can earn college credit or placement out of introductory courses, saving tuition and time.
AP Physics C, AP Chemistry, and AP Calculus BC consistently have the lowest 5-rates. Difficulty depends on your strengths and preparation.
AP Human Geography, AP Computer Science Principles, and AP Environmental Science are often cited as most accessible for first-time AP students.

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