Percent Increase and Decrease Quiz
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AP Biology UNIT 7 Natural Selection 7.10 Speciation Video Guide
🧬 7.10 Speciation AP Biology – Full 30-Minute Crash CourseSpeciation is one of the MOST important topics in Unit 7—and this focused 30-minute guide will help you master it fast. In this video, you’ll learn: A clear, simple explanation of what speciation is The difference between allopatric vs. sympatric speciation Key types of reproductive isolation Gradualism vs. punctuated equilibrium Common AP exam mistakes to avoid 🎯 Perfect for AP Biology students reviewing for tests or aiming for a
9th - 12th
Biology, General Science, Other (Science)
AP Biology UNIT 8 Ecology 8.4 Effect of Density on Populations Video
Ever wondered how population density affects survival in ecosystems? In this video, we break down the effect of population density and how limited food, water, and living space can impact organisms. You'll learn how dense populations increase competition, spread disease faster, and change how species interact with their environment. We also explore how ecosystems like rainforests, savannas, deserts, and wetlands support different population sizes based on available resources and carrying capacit
8th - 12th, Adult Education, Higher Education
Biology, General Science, Other (Science)
CCSS
RST.11-12.1
, RST.11-12.2
, RST.11-12.3
+7
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AP Biology UNIT 4 Cell Communication 4.5 Cell Cycle Video Guide
AP Biology Unit 4.5 lesson covering the cell cycle, interphase (G1, S, G2), and mitosis (PMAT) in full detail. This video explains what happens at each stage, how DNA content changes, and where key checkpoints occur. Includes an end-of-lesson quiz to test understanding and reinforce common AP exam concepts. Keywords: AP Biology, Cell Cycle, Interphase, Mitosis, PMAT, G1 Phase, S Phase, G2 Phase, M Phase, Checkpoints, DNA Replication, Sister Chromatids, Chromosome Number, AP Bio Review TIMEST
7th - 12th
Biology, General Science, Other (Science)
AP Biology UNIT 5 Heredity 5.5 Environmental Effects on Phenotype Video Guide
Your DNA doesn't decide everything — and that's what makes biology fascinating. 🧬 In this AP Biology 5.5 lesson, discover how environmental factors like temperature, nutrition, sunlight, and pH can dramatically alter an organism's phenotype — even when the genotype stays the same. TIMESTAMPS 0:00 Disclaimer & Introduction 4:46 Phenotypic Plasticity 16:26 Quiz Question Disclaimer: AP Biology ® is a registered trademark of College board, which was NOT involved in the development of these prod
8th - 12th
Biology, General Science, Other (Science)
Also included in: UPDATED 2026 AP Biology Unit 5: Heredity COMPLETE UNIT STUDY BUNDLE
Free Sample Presentation - AP Physics C Electricity and Magnetism - Unit 10
These high quality, visually coherent, fully animated and editable slide presentations are for the AP Physics C: Electricity and Magnetism course. The presentations cover all learning objectives from the College Board “Course and Exam Description” (CED Fall 2024) in a streamlined and easy to follow format. They are organized with the same topic numbers as in the CED. This ensures complete syllabus coverage, and facilitates alignment with the resources available on AP Classroom. The presentations
11th - 12th
Physics
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