BIOL 220: Introductory Biology

Discover the essence of hydrostatic pressure and its significance in capillary beds, examining its relationship with colloid osmotic pressure and how it affects fluid movement in our circulatory system.

Explore the pivotal role of neurotransmitter receptors in neuron communication. This video debunks misconceptions about their locations and highlights the integral part they play in transmitting signals between neurons. Discover why the postsynaptic membrane is the key player in this intricate dance of cellular messaging.

This video provides a comprehensive explanation of mucous and serous membranes, defining their characteristics and addressing statements about their epithelial types, functions, and exceptions.

Discover the role of Okazaki fragments in DNA replication and the importance of DNA Ligase in ensuring their correct joining. Learn how a malfunction in this enzyme might disrupt the formation of continuous DNA strands on the lagging strand.

Discover the significance of coronary arteries in heart health, where they branch from, and their role in delivering oxygen-rich blood to the heart muscle. Learn the differences between the ascending aorta, aortic arch, and pulmonary trunk in relation to the coronary arteries.

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.