BIOL 101: Biological Principles I

Explore the anatomy and function of muscle fibers, focusing on the critical role of the sarcolemma. Delve into the significance of myofibrils, sarcoplasm, and T-tubules. Understand the intricacies of muscle contraction and the cell's role in it.

Discover the precise organization of thin and thick filaments in muscle cells as we debunk misconceptions and highlight the vital role of sarcomeres in muscle contraction.

Explore the fascinating world of vertebrates and tunicates in this video answer. Learn about their shared anatomical features including notochords and dorsal hollow nerve cords that reveal their closely linked evolutionary history

Discover the intricacies of Allopatric Speciation, where geographical isolation plays a pivotal role. Examine the various factors influencing genetic divergence. Recognize how distinct environments foster unique evolutionary paths.

Discover how humans adapt to cold environments through thermoregulation processes. Understand the body's heat conservation and generation mechanisms. Learn why certain physiological responses occur in cold conditions.

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.