PreparED Study Materials
BI 211: Principles of Biology I - BI 211 - 001
School: Portland State University
Number of Notes and Study Guides Available: 5
Notes
Study Guides
Videos
Bioremediation vs. Biological Augmentation: Eco-Techniques Explained
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Explore the distinct approaches of bioremediation and biological augmentation in managing environmental issues. Learn how organisms are utilized for pollutant degradation or enhancing ecological functions to mitigate environmental degradation.
Body's Use of Iodide Ions: Their Metabolic & Medical Roles
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Discover the critical role iodide ions play in regulating metabolism through their involvement in thyroid hormones. Learn how active transport enables the movement of these ions in the body, requiring ATP energy. Uncover common sources of iodide ions and their importance in medical applications.
Unsung Heroes: The Impact of Decomposers in Forest Health
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Discover the pivotal role of decomposers and detritivores in forest ecosystems. Understand the catastrophic consequences of their absence, from biomass accumulation to biodiversity loss. Learn how these unsung heroes maintain forest health and sustainability.
Pathogens: Disease-Causing Microbes & Prevention
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Unlock the world of pathogens, the microorganisms causing diseases. Grasp how they invade, colonize, and adversely affect host organisms. Learn about prevention strategies to mitigate their harmful impacts.
Chemical Bonds Explored: From Basics to Ammonia's Polar Covalent Bondi
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Discover the captivating world of chemical bonds, from the basic definition to types and specific examples like ammonia. Delve into ionic, covalent, and hydrogen bonds and their distinct characteristics. Understand the unequal electron sharing in ammonia leading to polar covalent bonds.
Decoding Cholesterol's Influence on Cell Membrane Function & Fluidity
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Discover how cholesterol, a substance found in our body and certain foods, significantly impacts cell membrane fluidity. Learn its varying effects under different temperatures and in diverse cellular lipid compositions. Uncover its indispensable role in nerve signal transmission and cellular health.