BIO 111: Principles of Biology I

Explore the indispensable role of decomposers in ecosystems. Understand their impact on nutrient cycling, energy flow, and ecological balance. Realize what Earth would face without these vital organisms.

Explore the intricate layers of organization in the human body. From molecules to the complete organism, understand the sequential formation of our biological structure. Uncover the reasons behind incorrect hierarchical interpretations.

Explore the world of microbiology in this video as we investigate the processes that lead to genetic variation in bacterial populations. Learn about transduction, transformation, conjugation, and mutation, and discover why meiosis, a process occurring in sexually reproducing organisms, is not a source of genetic variation in bacteria.

Explore the foundational processes of aerobic and anaerobic respiration. Uncover the key roles of glycolysis, the citric acid cycle, and oxidative phosphorylation. Differentiate between the efficiencies and electron acceptors of both respiration types.

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.

Discover how cholesterol, a substance found in our body and certain foods, significantly impacts cell membrane fluidity. Learn its varying effects under different temperatures and in diverse cellular lipid compositions. Uncover its indispensable role in nerve signal transmission and cellular health.