BIOL 151: Intro to Biological Science I

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.

Unravel the intricate relationship between histones and DNA. Learn how histones maintain DNA structure within the cell nucleus and understand the significance of charge attractions in DNA-histone binding.

Explore the intricate components of the endomembrane system within a cell. Identify which structures belong to this system and which do not, with a specific focus on the unique role of the chloroplast.

Explore the intricacies of muscle contraction and the pivotal role played by elements like Calcium, Sodium, Potassium, and Chloride. Learn how Calcium directly triggers contraction by interacting with troponin and actin filaments. A thorough breakdown of each element's unique contribution to our body's movement.

Dive into the biochemistry of haemoglobin, a pivotal protein in red blood cells. We assess key statements about its structure and function, clarifying common misconceptions.

Uncover the fascinating system that nourishes osteocytes in our bones: the osteocyte lacunar-canalicular network. Learn how canaliculi connect these mature bone cells to vital nutrients, ensuring their health even at significant distances from blood vessels.