BIOL 240: Anatomy and Physiology

Discover the complex world of sea urchin reproduction, focusing on the essential role the cortical reaction plays in egg fertilization. Uncover common myths surrounding this process and learn what actually happens at the cellular level. Gain insight into how the formation of a fertilization envelope is crucial for successful fertilization.

Learn about the path of blood flow in the mammalian heart and circulatory system. Discover how oxygen-rich blood from the lungs enters the left atrium and understand why other statements about blood flow are incorrect.

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.

Discover the distinctions and similarities between gymnosperms and angiosperms. Delve into their structural features, seed development processes, and pollen grain formation. Uncover why only angiosperms possess ovaries.

Explore the fundamental characteristics of anions and decipher the statements that define them. Understand how electron transfer leads to ion formation, creating atoms with net electrical charges. Learn about the key property that sets anions apart from other atomic entities, providing insights into atomic structure and charge.

Uncover the nuances of stain functionality in microbiology with a focus on identifying non-functionally analogous pairs. This video provides an in-depth comparison of commonly used stains like Nigrosin Malachite Green and Crystal Violet.