Prepare for the 2018 AP Biology exam
10 videos
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AP Biology - How to Crush AP Biology Free Response Questions
Learn essential strategies for answering AP Biology free response questions effectively, including how to use directive words, key terms, and data to maximize your score.
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AP Biology - Cellular Respiration: Glycolysis, Krebs, and the ETC
This video explains cellular respiration, detailing glycolysis, Krebs cycle, and electron transport chain to show how cells convert glucose into ATP energy.
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AP Biology - Calculating ATP Efficiency in Cellular Respiration
Learn how cells convert glucose to ATP with only 32% efficiency. Discover where the remaining 68% of energy goes and how to calculate cellular energy efficiency.
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AP Biology - Circadian Rhythms: Genes vs. Environment
Learn how circadian rhythms work in mice through actograms, genetic clocks, and light cues. Understand how genes and environment control 24-hour cycles for AP exam success.
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AP Biology - Building Phylogenetic Trees from Molecular Data
Learn how to use cytochrome c protein data to build evolutionary trees by comparing amino acid differences between species, revealing true relationships beyond physical appearance.
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AP Biology - Mitosis vs. Meiosis: Key Differences That Get Tested
This video explains the key differences between mitosis and meiosis, focusing on why meiosis produces non-identical daughter cells through crossing over and independent assortment.
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AP Biology - Signal Transduction at the Synapse
Learn how neurons communicate across synapses using electrical signals, neurotransmitters, and chemical bridges to transmit every thought and movement in your body.
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AP Biology - Humoral vs. Cell-Mediated Immunity
This video explains the two branches of adaptive immunity: humoral (B cells/antibodies) targeting extracellular threats and cell-mediated (T cells) targeting infected cells.
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AP Biology - Population Decline and Genetic Rescue
This video explains genetic rescue in isolated wolf populations, showing how introducing new wolves restores genetic diversity and reverses population decline caused by inbreeding.
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AP Biology - Phototropism: How Plants Detect and Respond to Light
This video explains phototropism: how plants bend toward light through auxin hormone redistribution detected at the shoot tip, causing differential cell growth.