SBI3UE Examination Notes
By: Gursangat Sidhu and Derek Meng Unit 1 - The Cell
Unit 2 - The Chemical Basis of Life Part 1 - Molecules of Life Part 2 - DNA Replication and Protein Synthesis Enzymes DNA Structure DNA Replication Protein Synthesis Overview Transcription Translation Mutations Part 3 - Cellular Respiration and Photosynthesis Unit 3 - Genetics
Unit 1 - The Cell
Cell Theory: Cell theory: refers to the idea that cells are the basic unit of structure in every living thing. It states that: ● New cells are formed from other existing cells, ● the cell is a fundamental unit of structure, ● function and organization in all living organisms.
Eukaryotic and Prokaryotic Cells
Prokaryotic ● ● ● ● ● ● Have pili No nucleus…show more content…
● Isotonic: Solution of equal solute concentration. ● Hypertonic: Solution with a greater concentration than another (Hypotonic Solution). ● Hypotonic: Solution with a lesser concentration than another (Hypertonic Solution).
Unit 2 - The Chemical Basis of Life
Part 1 - Molecules of Life
Cohesion: Attract more water. Adhesion: Water attraction to surfaces. Organic hydrophobic substances: are non-polar. Universal Solvent: dissolves most polar and ionic substances. Transport Medium: allows for nutrients to travel through cells. Transparent: Allows for sunlight to go through, which allows photosynthesis. High Heat Capacity: Moderate temperature in enviroment Hydration Shell: Dipoles of water attaracted to dipoles of other substances ex) sugar. This dissolves it. (chemestry) Energy and Thermodynamics: Energy: Ability to do work or bring about change. Kinetic Energy: Energy of motion. Potential Energy: Stored energy ex) energy in chemical bonds Thermodynamics: Study of heat or energy transformations. 1st Law of Thermodynamics: Energy cannot be created or destroyed, but only converted from one form to another. 2nd Law of Thermodynamics: Energy changes increase the entropy of the universe. The spontaneity of a rxn depends on the change in entropy and the change in enthalpy.
Gibbs Free Energy (G): Systems tend to move from an unstable state, to a stable state. This movement can be harnessed to do work. ∆G > 0 Endergonic Reaction - Reverse rxn is spontaneous