AP Bio · Cells

Unit 1: Chemistry of Life

1 questions from past AP exams, newest first.

Question 1

Free-response questions 2026Open answer

Question 1 — 1. Molecules known as dinucleoside polyphosphates, a type of nucleotide, are signaling molecules that accumulate in plant cells during dry or stressful conditions. Part A Describe the three structural components of a…

Source: College Board — AP Biology, Free-response questions, 2026

Stuck on Unit 1: Chemistry of Life?

Our tutors clear up your doubts one to one — online, or in person with a local tutor.

Ask a tutor Lessons in AP Bio→