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Study with Quizlet and memorize flashcards containing terms like Water characteristics, Surface Tension, Specific Heat and more.
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.
Unit 1-8 Learn with flashcards, games, and more — for free. Unit 1-8 Learn with flashcards, games, and more — for free. ... 2021 AP Biology Exam Review ...
Download free-response questions from past AP Biology exams, along with scoring guidelines, sample responses from exam takers, and scoring distributions.
- 2: Interpreting and Evaluating Experimental Results with a Graph and Error Bars 9 points
- 4: Conceptual Analysis 4 points
- 6: Analyze Data 4 points
Many types of cancer are treated with a combination of therapies. In lung cancer, some tumors respond well to the drug paclitaxel followed by radiation treatment. Paclitaxel is a chemical that disrupts mitosis. Instead of spindle fibers originating from the two sides (poles) of the cell, paclitaxel-treated cells develop three poles and then divide ...
Solid tumors are clusters of cancer cells and often contain blood vessels. When molecule B binds to the wild-type Brec protein in the plasma membrane of certain solid tumor cancer cells (Figure 1), the cancer cells express the membrane protein A and sometimes stimulate increased growth of blood vessels into the tumors. Cells with a particular mutat...
Increasing the efficiency of photosynthesis is one way to increase crop yield and help to feed human populations. One enzyme vital to the Calvin-Benson cycle of photosynthesis is Rubisco. Rubisco catalyzes the fixation of atmospheric CO2 into organic molecules so that the carbon atoms can be used to produce carbohydrates. Rubisco is composed of two...
Download a sample free-response booklet for AP Biology (.pdf). Use this sample booklet for reference only to become familiar with the format. Exam questions assess the course concepts and skills outlined in the course framework. For more information, download the AP Biology Course and Exam Description (.pdf) (CED).
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Get exam information and free-response questions with sample answers you can use to practice for the AP Biology Exam.
