Using what you have learned about changes in Gibbs free energy, would you predict the ∆G value of catabolic reactions to be positive or negative? What about anabolic reactions? Justify your answers using the terms 'enthalpy' and 'entropy.'

Describe what takes place during a chemical reaction.

Which of the following would not result in an increase in reaction rate?

a. Increase in temperature

b. Particles in the solid phase

c. Presence of a catalyst

d. Smaller particle size

Which of the following statements is true for all exergonic reactions?

a) The products have more total energy than the reactants.

b) The reaction proceeds with a net loss of free energy.

c) The reaction goes only in a forward direction: all reactants will be converted to products.

d) A net input of energy from the surroundings is required for the reactions to proceed.