PreparED Study Materials
Notes
Videos
Chemical Equilibrium Explained: Identifying Correct Statements
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Gain a clear understanding of chemical equilibrium, where reactant and product concentrations stay constant due to equal forward and reverse reaction rates. Dispel common misconceptions about equilibrium, such as concentration equality and reaction reversibility.
Uncovering Food Chain Lengths: The Role of Energy Transfer Efficiency
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Unravel the mysteries of food chain lengths by analyzing various factors. We spotlight the 10% rule in ecology, emphasizing how energy transfer inefficiencies mold ecosystem structures and functions.
Oceans' Influence on the Biosphere: A Vital Connection
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Explore the profound impact of oceans on the biosphere in this video. Discover how oceans contribute to oxygen production, carbon dioxide absorption, and climate moderation, while also uncovering their limitations in regulating the pH of freshwater biomes and terrestrial groundwater.
Non-Analogous Stains: Nigrosin vs. Crystal Violet & Beyond
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Uncover the nuances of stain functionality in microbiology with a focus on identifying non-functionally analogous pairs. This video provides an in-depth comparison of commonly used stains like Nigrosin Malachite Green and Crystal Violet.
Charged Electroscope: Conductor Between Foils' Impact
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Explore the fascinating interaction between electrical energy charge and materials through the lens of an electroscope. Discover how inserting a conductor between its charged foil sheets changes the charge dynamics leading to an attraction between foil and needle. Understand the roles of conductors insulators and charge induction in this intriguing experiment.
Tibia Anatomy and Interosseous Membrane: Correct Bone Option
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Learn about the anatomy of the tibia, one of the lower leg bones, and discover how it's connected to the fibula through the interosseous membrane. Find out the correct answer regarding the tibia's structure and connections.