PreparED Study Materials
IB 346: Human Biology
School: University of Texas at Austin
Number of Notes and Study Guides Available: 3
Notes
Videos
Na+ Channels: Open at Resting Potential or Threshold?
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Discover the mechanics of voltage-gated Na+ channels and their role in neuron activity. This video breaks down key neuronal terms like resting potential and threshold to explain precisely when these channels open. You'll come away understanding that voltage-gated Na+ channels open at the threshold state initiating an action potential.
Microscopic Marvels: Understanding Compact and Spongy Bone Structures
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Uncover the microscopic intricacies of compact and spongy bone structures. Learn about osteons, trabeculae, and the vital role of osteocytes. Dive into the balance of strength and functionality bones provide to our body.
Allopatric Speciation: The Power of Geographic Isolation in Evolution
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Discover the intricacies of Allopatric Speciation, where geographical isolation plays a pivotal role. Examine the various factors influencing genetic divergence. Recognize how distinct environments foster unique evolutionary paths.
Survival Struggles: Cowbird Intrusion in Chipping Sparrow Nest
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Explore the complex dynamics of bird behavior in a serene North American forest setting. Witness the challenges faced by a diligent chipping sparrow as it tends to its nest, while an intruder lurks nearby. Delve into the fascinating world of symbiotic relationships in the animal kingdom and the impact they have on wildlife survival.
Forest Ecosystem: Harmony of Life & Abiotic Forces
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Discover the rich tapestry of a forest ecosystem, from diverse plant life to a wide range of forest-dwelling animals. Explore the vital roles of fungi and microorganisms in this dynamic environment. Learn about the abiotic factors, including soil types, water sources, sunlight, temperature, and oxygen, that shape this magnificent symphony of life.
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.