This PowerPoint presentation brings together all the learning outcomes of Biochemistry units in the BY1 specification for the Biology and Human Biology AS courses. The relevant section of the Teacher’s Guidance material follows, together with some explanatory notes.

This PowerPoint relates to the Properties of Water section of the BY1 specification. Students learn about the: Importance of water in terms of its polarity, ability to form hydrogen bonds, surface tension, as a solvent, thermal properties, as a metabolite.

This PowerPoint relates to the Plasma Membranes section of the BY1 specification. Students learn about the: (a) Principal components of the plasma membrane and the fluid mosaic model. Factors affecting permeability of the membrane. (b) Transport mechanisms: diffusion and factors affecting the rate of diffusion, osmosis and water potential, pinocytosis, facilitated diffusion, phagocytosis, secretion (exocytosis), active transport and influence of cyanide.

This PowerPoint relates to the Inhibitors section of the BY1 specification. Students learn about the: Principles of competitive and non competitive inhibition (references to reversible and irreversible action not required).

This PowerPoint relates to the Immobilised Enzymes section of the BY1 specification. Students learn about the: Determination of water potential by measuring changes in mass, and solute potential by measuring the degree of incipient plasmolysis. The permeability of cell membranes using beetroot.

This PowerPoint relates to the Cell Membranes and Transport section of the BY1 specification. Students learn about the: Principal components of the plasma membrane and the fluid mosaic model. Factors affecting permeability of the membrane.

This is a series of PowerPoint presentations, produced for students to aid their understanding of topics encountered throughout the biochemistry component of the AS Biology course. It is also a useful revision tool for student when used with the guidance notes. (WJEC)