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The Student and Tutor practiced calculations related to surface area to volume ratio and diffusion rates, understanding how cell size affects diffusion efficiency. They also thoroughly reviewed enzyme concepts, including the lock and key and induced fit models, factors affecting enzyme activity, and associated terminology. For follow-up, the Tutor will share worksheets on both topics, and the Student is expected to complete unfinished sections of their document.

The Student and Tutor engaged in a detailed review of enzymes, covering their definition, characteristics, and mechanisms of action. They explored enzyme-substrate interaction models, factors affecting enzyme activity, and the concept of activation energy. The session concluded with a recap of enzyme inhibition and co-factors, with the Student instructed to review notes before continuing the session on a second link.

The Tutor and Student reviewed the mechanism of the sodium-potassium pump, its role in active transport, and its importance in nerve impulse transmission. They then practiced calculating cell sizes using microscopy and determining the surface area to volume ratio for cells, focusing on how this ratio impacts material exchange efficiency.

The Student and Tutor reviewed key concepts in cell biology, including the differences between eukaryotic and prokaryotic cells and the specific functions of various organelles like the Endoplasmic Reticulum and Golgi apparatus. They also revisited diffusion, osmosis, and active transport mechanisms, discussing concentration gradients and types of solutions. For the next session, the Tutor plans to cover the sodium-potassium pump, introduce enzymes, and administer a short quiz on cell organelles, with the Student providing updates on school topics.

The Student and Tutor reviewed the structure and components of the cell membrane, focusing on the phospholipid bilayer, proteins (integral and peripheral), and their functions. They also covered the concept of diffusion as a transport mechanism across the membrane, explaining concentration gradients and passive vs. facilitated transport. The next steps involve planning the upcoming class schedule and continuing with topics like osmosis.

The Tutor and Student reviewed enzyme kinetics, specifically focusing on KM and Vmax of the Michaelis-Menten equation. The Student practiced calculating velocity and KM using the equation and analyzed the concept of steady state in enzyme reactions. The Tutor provided a document with definitions and mechanisms, and suggested reviewing notes on enzyme properties, along with the 20 important questions provided by a friend.