PreparED Study Materials
BI 101: First Year Standard Arabic
School: Portland State University
Number of Notes and Study Guides Available: 5
Notes
Study Guides
Videos
Understanding Epithelium: Types, Functions & Locations Explained
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Explore the complexities of epithelium tissue and its diverse types. Understand their distinct functions, ranging from protection to secretion and absorption, and learn about their various locations in the body. Highlighting the significance of epithelial cells in vital physiological processes.
DNA, RNA & Protein Synthesis: Eukaryotes vs. Prokaryotes Explained"
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Explore the differences in DNA, RNA, and protein synthesis between eukaryotic and prokaryotic cells. Understand the benefits of separation in eukaryotes and the efficiency of proximity in prokaryotes. Both systems reveal the ingenious ways cells adapt to their needs.
What Defines Anions? Electrons vs. Protons Unveiled
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Explore the fundamental characteristics of anions and decipher the statements that define them. Understand how electron transfer leads to ion formation, creating atoms with net electrical charges. Learn about the key property that sets anions apart from other atomic entities, providing insights into atomic structure and charge.
First Video In Our Three Part Series for Midterms
Intro to Biology: Microscopic Exploration of Life
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Journey through the intricate layers of life, from the foundational atoms and molecules that shape our world to the grand evolution of organisms. Discover how tools, like the microscope, revolutionized our understanding, and delve deep into the essence of biology. Experience the fusion of history, science, and the beauty of nature in one comprehensive exploration.
Silkworm Moths: Sensing Molecules, Hypothesis & Design
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Explore the sensory marvels of the male silkworm moth known as Bombyx mori and how they detect specific chemical signals from females. Uncover a hypothesis about the unique sensitivity of the moth's antennae and a prediction stemming from it. Learn how to design an experiment to test this hypothesis and deepen your understanding of insect behavior.
Pharyngeal Slits: The Feeding Marvel in Lancelets and Tunicates
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Explore the vital roles of pharyngeal slits in lancelets and tunicates. Learn how these clefts aid in filter-feeding, capturing food particles, and evolve through different life stages.






















