15296203913 | define energy | the ability to do work | 0 | |
15296250874 | What is potential energy? (w example) | energy that is stored ex-water behind a dam | 1 | |
15296257790 | what is kinetic energy? (w example) | energy of motion ex- releasing arrow from a bow | 2 | |
15296277875 | what are the 6 specific types of energy? | mechanical, light, heat, sound, electrical and chemical | 3 | |
15296284983 | What is the first law of thermodynamics? | Energy cannot be created or destroyed but can be transformed and transferred | 4 | |
15296289062 | What is the second law of thermodynamics? | entropy is constantly increasing in the universe AND energy transformation tend to go towards a state of more disorder but higher stability | 5 | |
15296432083 | endergonic reaction | Reaction that absorbs free energy from its surroundings. | 6 | |
15296439900 | exergonic reaction | Reaction that proceeds with a net release of free energy. | 7 | |
15296452754 | what is the equations for calculating free energy? | delta G= delta H- T delta S | 8 | |
15296457474 | delta H is negative | reactant has more energy and the reaction is exergonic | 9 | |
15296463234 | delta H is positive | product has more energy and the reaction is endergonic | 10 | |
15296469615 | delta G is positive | not spontaneous | 11 | |
15296469617 | delta G is negative | spontaneous | 12 | |
15296474152 | delta S is positive | more disorder | 13 | |
15296474153 | delta S is negative | less disorder | 14 | |
15296484328 | 4 factors that affect entropy | state of matter, particle size, temperature, number of particles | 15 | |
15296518842 | endergonic reactions start with... | poor reactants and rich products | 16 | |
15296522544 | exergonic reactions start with.... | rich reactants and poor products | 17 | |
15296529763 | what is enthalpy? | the amount of energy stored in the products vs reactants. (H) | 18 | |
15297156822 | what is energy coupling? | the use of energy released from an exergonic reaction to drive an endergonic reaction ( has a positive delta G value and will not occur spontaneously) | 19 | |
15297173890 | how does ATP play a role in energy coupling? | the previous reaction combines with ATP hydrolysis; formation of ATP is an endergonic process | 20 | |
15297203612 | how can an enzyme affect the rate of reaction? | through a catalyst, it can speed up the chemical reaction and make the rate of reaction higher | 21 | |
15297206760 | how can an enzyme affect the activation energy? | enzymes lower the amount of activation energy needed to make reactants into products. | 22 | |
15297447216 | enzyme | A type of protein that speeds up a chemical reaction in a living thing | 23 | |
15297449647 | substrate | reactant of an enzyme-catalyzed reaction | 24 | |
15297451976 | active site | The part of an enzyme where the chemical reaction occurs. | 25 | |
15297454688 | products | Ending materials in a chemical reaction. | 26 | |
15297461705 | competitive inhibitor | competes with substrate for active site | 27 | |
15297467185 | non-competitive inhibitor | an inhibitor that binds to an enzyme at an allosteric site. | 28 | |
15297479506 | cofactors (w examples) | nonprotein enzyme helpers (small and non polar) Zn2+ Fe2+ Cu2+ Mg2+ | 29 | |
15297496101 | coenzymes | organic cofactors that aid enzyme actions coenzyme A and B vitamins NAD FAD | 30 | |
15297519072 | enzyme in the old lab | catalyst | 31 | |
15297519073 | substrate in the old lab | H2O2 | 32 | |
15297522395 | products in the old lab | O2 and H2O | 33 | |
15297546987 | why did we use KMnO4 in the old lab? | to figure out how much H2O2 was left in the beaker | 34 | |
15297630049 | How does low temperature affect enzymes? | enzyme and substrate don't collide as often so less product is formed | 35 | |
15297633863 | How does high temperature affect enzymes? | hydrogen bonds ae broken and the enzyme gets denatured | 36 | |
15297647040 | how does a basic pH affect enzymes? | hydrogen bonds interfered with shapes/changes and lots of (OH)- CAUSES SLOW OR NO REACTION | 37 | |
15297655920 | how does a very acidic pH affect enzymes? | lots of H+ and H+ interfere with hydrogen bonds changing the shape of the enzyme CAUSES SLOW OR NO REACTION | 38 | |
15297668902 | what is the optimal pH for an enzyme? | 6-8 | 39 | |
15297701038 | how do you calculate rate of reaction? | Product 2- Product 1 / Time 2- Time 1 | 40 | |
15297730664 | what is an allosteric site? | a different location that is not the active site of enzyme catalysis - non-competitive inhibitors bind here | 41 | |
15297744568 | what is allosteric regulation? | when an enzymes functionality at the active site is affected by the binding of a regulatory molecule | 42 | |
15297770569 | Why is feedback inhibition important? | it prevents the cell from wasting resources by synthesizing more product than necessary | 43 | |
15297788619 | what role do activators play in allosteric regulation? where does it bind? | bind to the allosteric site of the enzyme and stables it in its active form | 44 | |
15297800209 | what role do inhibitors play in allosteric regulation? where does it bind? | binds to the allosteric site and stabilizes it in its inactive form | 45 |
AP Bio Test 4 Flashcards
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