PreparED Study Materials
BIOL 142: Foundations of Biology: Ecology and Evolution
School: University of Maryland - Baltimore County
Number of Notes and Study Guides Available: 7
Notes
Study Guides
Videos
Muscle Contraction: Which Part Moves the Least? Origin vs. Insertion
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Uncover the fundamentals of human muscle contraction and anatomy in this lesson. Highlighting the distinct roles of muscle origin and insertion we clarify their functions in movement. Learn why the muscle origin is the cornerstone of stability during contraction anchoring our body mechanics.
Balancing Act: How Negative Feedback Loops Maintain Harmony
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Discover the concept of negative feedback loops in biological systems, where balance is maintained by counteracting changes. Explore the four key components: Stimulus, Sensor, Control Center, and Effector, through examples like blood sugar regulation. Uncover how these loops play a crucial role in keeping our body systems in harmony.
Meal to Digestion: Grasping Distension & Body's Control Center
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Discover what happens in your body after a hearty meal! Learn about the concept of 'distension' and how nerve cells act as messengers to your control center, orchestrating the digestive process.
Testing the Nature of a Mysterious Woodland Substance
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We explore how to determine the nature of a mysterious, gelatinous substance found on a forest rock. By conducting a series of tests, including microscopy, DNA staining, respiration observation, and growth experiments, we aim to unravel whether this enigmatic material is alive, inanimate, or a product of a living organism.
How Natural Selection Led to the Emergence of MRSA in a Community
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Explore the mysterious rise of MRSA following a battle against S. aureus with methicillin. Delve into various theories, and uncover the power of natural selection in shaping bacterial communities.
Epiglottis & Glottis: Guardians of Breath and Swallow
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Learn about the critical roles of the epiglottis and glottis in our respiratory and digestive systems. Understand how the epiglottis acts as a protective gate during swallowing, while the glottis facilitates sound production. Together, they ensure safe breathing and swallowing.