Bio 1 Weekly Notes
Bio 1 Weekly Notes BSC2010
Popular in Biological Science 1
verified elite notetaker
Popular in Biological Sciences
This 1 page Class Notes was uploaded by clb13m on Friday February 5, 2016. The Class Notes belongs to BSC2010 at Florida State University taught by Dr. Steven Marks in Fall 2015. Since its upload, it has received 55 views. For similar materials see Biological Science 1 in Biological Sciences at Florida State University.
Reviews for Bio 1 Weekly Notes
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 02/05/16
Know the difference catabolism, and anabolism and whether they consist of energy generating or consuming reactions o Metabolism is the sum total of all the chemical reactions that occur in an organism. o Catabolism – energy generating (releases energy) by breaking down complex molecules into simpler compounds. EXOTHERMIC Ex: Cellular respiration o Anabolism – energy consuming to build complex molecules from simpler ones. ENDOTHERMIC Ex: photosynthesis Know what DG is, that a reaction with a negative DG goes forward spontaneously and releases energy (is exergonic), one with a positive DG is nonspontaneous, requires an energy input (is endergonic) o Free energy (G) – amount of energy that is available to do work. Not all the energy in a system is usable, some is entropy. o ∆G – change in free energy. For chemical reactions, at equilibrium is 0. o If negative – there is a net release of energy the reaction occurs spontaneously.. If positive, there is a net gain of energy during the reaction then energy must be added for the reaction to occur. Understand that cells couple the hydrolysis of ATP to drive unfavorable (anabolic, nonspontaneous, pos DG) chemical reactions o Exergonic rxn – release energy, negative ∆G, occurs spontaneously. In general, catabolic reactions are exergonic. o Endergonic – requires energy, positive ∆G, does not occur spontaneously. In general, anabolic reactions are endergonic o To do work, which requires energy; cells couple these endergonic processes (transport, chemical) to exergonic processes (mechanical). This is energy coupling. Most energy coupling in cells is mediated by ATP. o Hydrolysis of ATP is exergonic. ∆G of 7.3 kcal/mol. ATP + H20 = ADP + P + Energy. o Transport work – ATP phosphorylates transport proteins o Mechanical work – ATP binds noncovalently to motor proteins, then is hydrolyzed Know that o Virtually all biochemical reactions are catalyzed by an enzyme. o A catalyst is an agent that increases the rate of a chemical reaction, without being consumed by the reaction. It is reusable. Enzymes are a class of proteins that act as catalysts. Know that an enzyme's active site is the place on the enzyme where the reaction it controls takes place.
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'