PreparED Study Materials
BIOL 121: Modern Biology
School: Carnegie Mellon University
Number of Notes and Study Guides Available: 2
Notes
Videos
Cellular Respiration: From Glucose to Energy-Rich ATP
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Dive into the world of cellular respiration, where glucose transforms into energy-rich ATP. Unpack the crucial steps that occur mainly within the mitochondria, resulting in the release of carbon dioxide and the production of the cell's primary energy currency. Decode life's foundational energy process and its significance in cellular functions.
Adapting to Extreme Cold: The Science of Shivering & Homeostasis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the body's innate ability to adapt to extreme cold conditions. Learn how the brain orchestrates warming responses like shivering. Grasp the concept of homeostasis in maintaining internal stability.
First Video In Our Three Part Series for Midterms
Intro to Biology: Microscopic Exploration of Life
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Journey through the intricate layers of life, from the foundational atoms and molecules that shape our world to the grand evolution of organisms. Discover how tools, like the microscope, revolutionized our understanding, and delve deep into the essence of biology. Experience the fusion of history, science, and the beauty of nature in one comprehensive exploration.
Pelvis Anatomy Decoded: Dispelling Myths with Accurate Insights
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the intricate details of the pelvis anatomy as we analyze and correct misconceptions about its structure and components, using sketches for clarity.
Bacterial Genetic Variation: Meiosis Excluded from the Equation
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the world of microbiology in this video as we investigate the processes that lead to genetic variation in bacterial populations. Learn about transduction, transformation, conjugation, and mutation, and discover why meiosis, a process occurring in sexually reproducing organisms, is not a source of genetic variation in bacteria.
Langerhans Cells: Stratum Spinosum, Corneum, Granulosum, or Basale?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the role and location of Langerhans cells key components of the human immune system found in the skin. Learn about the different layers of the skin and where these cells predominantly reside. By the end of the video you'll know that Langerhans cells are mainly found in the Stratum Spinosum layer


