AP®︎ Biology: Topic 6.2 Practice Test
Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 6.2 of AP Biology – DNA Replication.
Questions List
Topic 6.2
Question 1 Easy
This question tests the following: IST-1.M.1
What does DNA replication ensure?
What You’re Being Tested On:
Explore the learning objectives taken directly from the College Board’s AP® Biology Curriculum. Ensure you’re prepared for the exact topics covered on the AP® exam, in-class tests, and quizzes, and gain confidence in your mastery of the material.
Topic 6.2: DNA Replication
Learning Objective: 6.2.A
Describe the mechanisms by which genetic information is copied for transmission between generations.
Essential Knowledge: 6.2.A.1
DNA replication ensures continuity of hereditary information. i. DNA is synthesized in the 5’ to 3’ direction. ii. Replication is a semiconservative process, meaning one strand of DNA serves as the template for a new strand of complementary DNA. iii. Helicase unwinds the DNA strands. iv. Topoisomerase relaxes supercoiling in front of the replication fork. v. DNA polymerase requires RNA primers to initiate DNA synthesis. vi. DNA polymerase synthesizes new strands of DNA continuously on the leading strand and discontinuously on the lagging strand. vii. Ligase joins the fragments on the lagging strand. Exclusion: The names of the steps and particular enzymes involved, excluding DNA polymerase, ligase, RNA polymerase, helicase, and topoisomerase, are beyond the scope of the AP Exam.
