BIOL 74156: Biology 230

Explore the application of parsimony in constructing phylogenetic trees, emphasizing simplicity in scientific explanations and its relation to evolutionary changes. Learn about various options for tree construction and the core concept of choosing the most parsimonious representation

Explore the fundamentals of atomic reactivity by evaluating the influence of electron shells, orbitals, and energy levels. This video highlights the pivotal role unpaired electrons play in determining how and why elements react, making it a cornerstone for chemistry enthusiasts.

Discover how our brain interprets the scent of smoke differently based on context. Compare reactions in an open campfire setting versus an enclosed residence hall. Understand the underlying mechanisms of olfactory fatigue and context-driven alarm responses.

Discover what sets muscle cells apart from nerve cells in the complex world of cellular biology. Our video zeroes in on gene expression explaining how it's the key difference between these two cell types. Equip yourself with the knowledge to better understand cellular function and diversity.

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.

Explore the definitions of tissue, organ, and organ system. Understand the distinctions and interconnectedness between these components. Get an overview of the human body's eleven major organ systems and their functions.