Experienced Biotechnology Graduate Teaching Biology for IB, AP & GCSE Boards. Specialized in Genetics, Anatomy, Physiology & Zoology

The Tutor introduced a new module on cell signaling, covering the fundamental concepts of signals, receptors, and signal transduction. They discussed the specificity, sensitivity, and various mechanisms of signal transduction, including enzyme cascades and gated ion channels, explaining the role of ion movement and electrochemical potential in cellular responses. The Student is expected to revise the material for the next session, where further details on ion movement and repolarization will be covered.

The Student and Tutor initiated their course by exploring the fundamental concepts of amino acids, including their structure, classification into polar and non-polar types, and unique chemical properties like chirality and zwitterionic nature. They also discussed stereoisomers and the biological significance of various amino acids and their residues. The next session is planned to cover oligopeptides and polypeptides.

The Student and Tutor engaged in an introductory biochemistry session to discuss the student's needs for supplemental tutoring for an online class. The Tutor provided an overview of biomolecules, focusing on the classification and properties of carbohydrates (monosaccharides, oligosaccharides, and polysaccharides), and explained concepts like monomers, polymers, and hydrolysis. They also scheduled a follow-up session to review protein structure for an upcoming quiz and discussed a plan to cover other topics like enzymes and carbohydrates in subsequent weeks.

The Tutor and Student engaged in a detailed Biology lesson on gene regulation, specifically focusing on the structure, function, and regulation of the lac operon in bacteria. They covered the roles of its various genes, the mechanism of negative control and induction by allolactose, and briefly discussed the impact of certain mutations. The next session will delve into the lac operon's activation and the cAMP-CAP complex.

The Tutor introduced the concept of gene regulation in bacteria, explaining its significance, types of genes involved, and common regulated processes. They delved into transcriptional regulation, describing the roles of regulatory proteins (repressors and activators) and effector molecules (inducers, corepressors, and inhibitors) with visual examples. The session also covered enzyme adaptation and briefly introduced the lactose operon, which will be continued in the subsequent class.

The Tutor and Student discussed DNA recombination mechanisms, focusing on the roles of Rec proteins, Holiday junctions, and site-specific recombination. They also explored the application of site-specific recombination in viral integration and antibody diversity. The next session will cover transposition.