Which of the following describe(s) an exergonic reaction?

indicate whether the following reactions are endergonic, requiring energy input, or exergonic, releasing energy:   endergonic, exergonic     Definition Word Photons from the Sun reach planet Earth   Plants use sun energy to convert carbon dioxide into sugars   Living organisms break down sugars into carbon dioxide and water   Living organisms make ATP from ADP and phosphate   Living organisms break down ATP into ADP and phosphate   Living organisms use ATP to power metabolic function and other things such as muscle movement

In the diagram below, the energy "released" by the reaction -- the difference between the energy of the products and the energy of the reactants -- is kJ. [be sure to subtract the two y-axis numbers in the correct order, product energy - reactant energy] Energy 250 kJ Reactants 200 kJ Heat AH evolved 100 kJ Products 100 kJ Reaction

Which statement is correct for the reaction shown? Glucose ATP ADP Glucose 6-phosphate Glucose and ATP are reactants, and a phosphate is transferred from glucose to ATP. Glucose and ADP are reactants, and a phosphate is transferred from glucose to ADP. Glucose and ATP are reactants, and a phosphate is transferred from ATP to glucose. Glucose and ADP are reactants, and a phosphate is transferred from ADP to glucose.

Which of the following is true of exergonic reactions? Energy of the products is lower than the energy of the reactants These reactions generally do not occur spontaneously Photosynthesis is an example Is a reaction that requires the net input of energy Energy of the products is higher than the energy of the reactants

Enzymes are biological catalysts that enhance the rate of a reaction by: stabilizing the transition state. decreasing the amount of free energy released. increasing the activation energy. increasing the amount of free energy released. O increasing the energy in the transition state.

Which of the following is a description of an example of the second law of thermodynamics? Some chemical energy in glucose transforms to chemical energy in ATP. O The kinetic energy of wind turns the blades of a wind turbine. The chemical energy in gasoline is transformed to kinetic energy to drive a car. The mechanical energy of flowing water turns a turbine. Some chemical energy in gasoline is transformed to heat while driving a car.

Which of the following is/are TRUE of an enzyme? Enzymes lower the release of free energy Enzymes are not consumed in a reaction Not all enzymes are proteins  Enzymes only affect endergonic reactions  Enzymes only affect exergonic reactions

Which scientist suggested that enzymes bind the transition states of their catalyzed reactions better than their substrates?     Pauling     Michaelis     Fisher     Richardson

Which of the following statements is NOT true?   None of the other four answers (all are true) The energy required to cause a chemical reaction to occur is called the activation energy Decomposition (degradation, catabolic) reactions are usually endergonic Chemical reactions in living cells are catalyzed by enzymes Enzymes increase the probability that a chemical reaction will take place by lowering the activation energy