Bsc 1005 Midterm Study Guide Chapter 1-7

Main Functions of Fats {Ans: Provide Nutrients Store Energy Insulate us Protect our vital organs Act as messengers Help proteins do their job}Enzymes: Functions, Activation Energy, Substrate, Inhibitors {Ans: *Are Proteins* Function: Such as aiding in digestion & metabolism Activation Energy - Is the energy required to start a reaction Activation Energy WITHOUT Enzyme - A reactant molecule must overcome the activation energy barrier before a chemical reaction can break the molecule into products Activation Energy WITH Enzyme - An enzyme speeds the chemical reaction by lowering the activation energy barrier Substrate - A molecule upon which an enzyme acts Inhibitors - Can inhibit a metabolic reaction by binding to an enzyme and disrupting it's function}Steps of the Scientific Method {Ans: Question Hypothesis Prediction Experiment Analyze Data Conclusion}Understand Book Figure *5.14* {Ans: Osmotic Environments. Animal cells (such as red blood cell) and plant cells behave differently in different osmotic environments}Cytoskeleton {Ans: A network of fibers that holds the cell together, helps the cell to keep its shape, and helps in movement}Hypertonic {Ans: Having a higher osmotic pressure than a particular fluid}