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Located in thylakoid and is light absorbing pigment; gives plants green color by absorbing violet blue and red light and reflects green light. Stomata. Where CO2 enters and O2 + water vapor leave plants. See more. Unit 1-8 Learn with flashcards, games, and more — for free.
Download free-response questions from past exams along with scoring guidelines, sample responses from exam takers, and scoring distributions. If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at ssd@info.collegeboard.org.
27 of 27. Quiz yourself with questions and answers for AP Biology 2021-2022 Semester 1 Final Exam (FRQ), so you can be ready for test day. Explore quizzes and practice tests created by teachers and students or create one from your course material.
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- Question 1
The Na+ /K + ATPase pumps ions against their concentration gradients. This requires an input of (metabolic) energy.
(b) Identify a dependent variable in the experiment represented in Figure 1. • The number of cells Justify the use of normal human kidney NHK cells as a control in the experiments. Accept one of the following: It allows the scientists to determine the effect of PKD on the cells’ responses to (various concentrations of) ouabain. It allows the scie...
point point Accept one of the following: Increasing concentrations of ouabain result in decreasing ATPase activity (in both types of cells). There is an inverse relationship/negative correlation between the concentration of ouabain and the ATPase activity (in both types of cells).
Note: Student samples are quoted verbatim and may contain spelling and grammatical errors.
Directions: Questions 1 and 2 are long free-response questions that require about 25 minutes each to answer. Questions 3 through 6 are short free-response questions that require about 10 minutes each to answer. Read each question carefully and completely. Answers must be written out in paragraph form.
This is the 2013 practice test published by the College Board. Includes AP Biology multiple choice, grid-ins, and free response questions. Be sure to review this one! This is the 1999 exam that was released by the College Board. Includes answers for multiple choice along with thorough explanations for the essay questions.
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Below are two different practice exams. The Review Guide Practice Exam has all of the questions from 2012 CED & 2020 CED. The 2013 AP Bio Practice Exam is the nationally released AP Practice Exam. (Note: They both are based on the old CED so there are questions that are no longer applicable). Review Guide Practice Exam.
