AP®︎ Biology: Topic 7.12 Practice Test
Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 7.12 of AP Biology – Origins of Life on Earth.
Questions List
Topic 7.12
Question 1 Easy
This question tests the following: SYI-3.D
What does genetic diversity refer to?
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 7.12: Origins of Life on Earth
Learning Objective: 7.12.A
Describe the scientific evidence that supports models of the origin of life on Earth.
Essential Knowledge: 7.12.A.1
The origin of life on Earth is supported by scientific evidence. i. Geological evidence reinforces models of the origin of life on Earth. ii. Earth formed approximately 4.6 billion years ago (bya). The environment was too hostile for life until about 3.9 bya, and the earliest fossil evidence for life dates to 3.5 bya. Taken together, this evidence provides a plausible range of dates for the origin of life.
Essential Knowledge: 7.12.A.2
The RNA world hypothesis proposes that RNA could have been the earliest genetic material. There are three assumptions: i. At some point in time, genetic continuity was assured by the replication of RNA. ii. Base-pairing is necessary for replication. iii. Genetically encoded proteins were not involved as catalysts.
