PreparED Study Materials
BIOLOGY 287: Intro Ecology
School: University of Massachusetts
Number of Notes and Study Guides Available: 1
Notes
Videos
Aldosterone & Target Cells: Intracellular Receptor Insights
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Learn why lipid-soluble signaling molecules like aldosterone only impact specific target cells. We discuss four theories and reveal that intracellular receptors present only in target cells are the key. This video demystifies the unique mechanism behind aldosterone's selective action.
Okazaki Fragments: Unraveling the Secrets of DNA Replication
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Explore the intricacies of DNA replication and the pivotal role of Okazaki fragments. Understand the difference between the leading and lagging strands. Dive deep into the mechanisms that drive this life-sustaining process.
Cell Specialization Origins: Ectoderm, Mesoderm & Endoderm Roles
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Discover the origins of specialized cells in embryonic development and learn about the three essential germ layers: ectoderm, mesoderm, and endoderm. Explore how these layers form the foundation for all multicellular life.
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.
Dispersal vs. Vicariance: Allopatric Speciation Explained
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Learn the distinctions between dispersal and vicariance in biology. Understand how organisms' movements and environmental changes play crucial roles in allopatric speciation. Grasp the differences between movement across existing barriers and the creation of new barriers.
Why Bones Are Vital: The Role of Red Marrow in Blood Cell Production
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Explore the crucial role of red marrow in producing vital blood cells and maintaining the circulatory and immune systems. Learn why bones are essential for blood cell production and understand why other options are incorrect.