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Try our free AP Biology unit 1 practice test. This unit introduces the structure and function of the chemical components of life. An understanding of the major biological macromolecules’ structure and function is a key focus in this unit.
Photosynthesis is essential to all life on earth; both plants and animals depend on it. It is the only biological process that can capture energy that originates in outer space (sunlight) and convert it into chemical compounds (carbohydrates) that every organism uses to power its metabolism.
Learn AP Biology using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of biochemistry, cell biology, genetics, evolution, and ecology, and develop scientific thinking skills as you explore the study of life.
Here’s a set of study guides for AP Biology. AP Biology – Unit 1 – Chemistry of Life. AP Biology – Unit 2 – Cell Structure and Function. AP Biology – Unit 3 – Cellular Energetics. AP Biology – Unit 4 – Communication and Cell Cycle. AP Biology – Unit 5 – Heredity.
Aquatic biomes are ripe with these interactions. Coral reefs, for example, exhibit rich biodiversity. Information presented and the examples highlighted in the section support concepts outlined in Big Idea 2 of the AP ® Biology Curriculum Framework.
Our free AP Biology unit 8 practice test covers ecology. How populations function in their environment in terms of energy flow, biodiversity, and density is the main focus of Unit 8.
For example, in a meadow ecosystem, plants may support a grazing food web of different organisms, primary and other levels of consumers, while at the same time supporting a detrital food web of bacteria, fungi, and detrivorous invertebrates feeding off dead plants and animals.
