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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.
Study with Quizlet and memorize flashcards containing terms like Water characteristics, Surface Tension, Specific Heat and more. ... AP BIOLOGY EXAM 2021. 4.8 (4 ...
43. Ocean warming will favor population growth of nonnative species as their habitats shift northward. 44. A descrease in the crab population. 5. The mitochondrial matrix. 6. 1 micromole/sec. 7. The rate of pyruvate dehydrogenase-catalyzed reaction is slower in the presence of a higher concentration of acetyl-CoA.
Starting with the 2024 exam, the layout for the free-response questions (FRQs) will be different from prior exams. For a summary of the changes, and to help you visualize this change to the layout, we’ve applied the 2024 layout to the 2021–2023 AP Biology FRQs. You can find the original scoring guidelines on the past exam questions page.
Multiply the number of points you got on the multiple-choice section by 1.03. Multiply the number of points you got on the two long free-response questions by 1.5. Multiply the number of points you got on the short free-response questions by 1.43. Add all these numbers together to get your raw AP Biology score.
AP® Biology 2021 Scoring Guidelines. (a) Describe the characteristics of the plasma membrane that prevent simple diffusion of Na+ 1 point. and K+ across the membrane. Accept one of the following: The interior of the plasma membrane is hydrophobic/nonpolar. The phospholipid tails are hydrophobic/nonpolar.
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About the Exam. The AP Biology Exam will test your understanding of the biological concepts covered in the course units, as well as your ability to utilize the scientific method and analyze data. You are allowed to use a four-function calculator (with square root), scientific, or graphing functions throughout exam. This is a hybrid digital exam.
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Obtain A High Score On The AP Biology Exam With Our Practice Tests & Course.
