Biology Notes free essay sample

Some students measured the pH of water containing elodea, a common water plant. The students wanted to learn how much carbon dioxide elodea removes from the water. The students knew that decreasing levels of carbon dioxide correspond to increasing PH. Which cellular structure in elodea carries out the process that is most likely to result in increasing pH? Which structures, if found in a cell, would provide the best evidence that the cell is? Where In the cell do the following occur? Calvin cycle, calculuss, Krebs cycle, electron transport chain. Students in a biology class tested the effects of antibiotics on the growth of bacteria. They cultured bacteria in four glass Petri dishes and then added different amounts of antibiotic to each dish. After the experiment Is completed, what should be done with the Petri dishes? After an experiment in which students cultured live bacteria, they soaked their Petri dishes in bleach before washing and reusing them. We will write a custom essay sample on Biology Notes or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page What is the purpose of soaking the Petri dishes in bleach? What are the cell walls of Members of the Kingdom Plantar made of? What are the cell walls of Members of the Kingdom Fungi made of? Why are the classification of an organism and the scientific name of an organism are different? Define and differentiate: hypothesis, fact, theory, law In which part cell does the Calvin Cycle take place? What is the main organelle of cellular respiration? What Is Bio-luminescence? What organelle traps light energy for use in photosynthesis? What is the most common pigment contained in a photo-system? Why cant roots photosynthesize? Where is the energy stored in a molecule of ATP? How do humans store excess energy? Name two molecules are involved in carbon fixation? What cell processes requires energy? Name the type of cellular transport that doesnt require energy What are the products of alcoholic fermentation? Where in a plant cell is the oxygen we breathe produced? What forms when only ONE phosphate group bonds in the process of forming? In which part of a cell does the Citric Acid Cycle take place? Biology Notes free essay sample Four major classes: Carbohydrates (made of simple sugar/glucose), Lipids (Glycerol and Fatty Acids), Proteins (Amino Acids) and Nucleic Acids (Nucleotides) * Condensation reaction/dehydration synthesis: a reaction that creates a covalent bond between two interacting subunits. Removal of H from one functional group and an OH from the other, and the H come together to form a water molecule (H2O). Anabolic process because it results in the construction of large molecules from smaller subunits * Hydrolysis reaction: a catabolic process in which a water molecule is used to break a covalent bond. Combustion) * Entropy (S) is the measure of randomness and disorder in energy (or collection of objects), like playing cards. It increases when: Solids become liquids/gasses, Liquids become gasses, Fewer moles of reactant form more moles of product, Complex become simpler molecules (polymer to monomer, glucose to CO2 and H2O), Solutes move from area of high concentration to an area of lower concentration, Diffusion. We will write a custom essay sample on Biology Notes or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page * Exothermic, increase in entropy= spontaneous * Endothermic, decrease in entropy= not spontaneous * Otherwise, spontaneity depends of temperature Gibbs’ Free Energy * Free energy (Gibbs’ Free Energy) (G) is Energy that can do useful work. Spontaneous if its negative. Water moves, creating heat. This is showing the energy being lost as heat * The entropy of the universe increases with any changes that occur (second law of thermodynamics) * Activities in the body increase order in the universe through anabolic processes. This is contradicting the second law of thermodynamics. They couple these reactions with catabolic processes that counteract them completely, which will increase entropy in the universe (ex. Lifting potato chip into mouth) * Energy in muscles * More potential * Less entropy * Increases in cellular respiration and digestions by breaking down molecule * Increases in the sun as photosynthesis creates order. This disorder will eventually burn out the sun, as there will be no free energy.