exam 3 PCB 3023 questions with
verified answers graded A+ passed
Free Energy - correct answer energy available to do work
second law of thermodynamics - correct answer Tendency towards disorder
Result of increased order within the cell in order to adhere to second law of thermodynamics -
correct answer Heat dissipation outside the cell
Free energy change in a spontaneous reaction - correct answer Reactants are higher energy than the
products
Change in free energy in a spontaneous reaction - correct answer Negative
Spontaneous reactions increase order/disorder - correct answer disorder
Energetically unfavorable reactions result in more or less ordered products - correct answer more
ordered
Exergonic reaction - correct answer releases energy
Spontaneous reactions are exergonic/endergonic - correct answer exergonic
What will slow down the rate of a spontaneous (or any) reaction? - correct answer higher activation
energy
Endergonic reactions consume___________ - correct answer energy
Dehydration synthesis is spontaneous/nonspontaneous - correct answer non spontaneous
, What will cause a reaction to move toward one direction over another (relating to energy) at
equilibrium - correct answer The greater the difference in energy the more one side will be favored
at equilibrium
Hydrolysis is a spontaneous/non spontaneous reaction - correct answer spontaneous
Reaction at equilibrium - correct answer no net changes in amounts of reactants and products
Change in entropy as a reaction approaches equilibrium - correct answer increased entropy
Two factors that affect the direction of a reaction - correct answer -Difference in free energy
-relative concentrations of reactants and products
glycolysis - correct answer conversion of glucose into pyruvate molecules
Metabolism - correct answer Complex web of sequential reactions that organisms process energy
through
The breakdown of sucrose is exergornic/endergonic - correct answer exergonic
What slows down the breakdown of sucrose - correct answer High energy intermediate (requires
high activation energy)
glycosidase - correct answer enzyme that hydrolyzes sucrose to glucose and fructose
Affect of enzyme on reaction - correct answer increased rate
Direction that an enzyme will move a reaction - correct answer enzymes can work in either the
forward or reverse direction but will favor the direction that has lower energy
Source of energy in ATP - correct answer high energy phosphoanhydride bonds
Net result of coupled reactions - correct answer Negative deltaG
verified answers graded A+ passed
Free Energy - correct answer energy available to do work
second law of thermodynamics - correct answer Tendency towards disorder
Result of increased order within the cell in order to adhere to second law of thermodynamics -
correct answer Heat dissipation outside the cell
Free energy change in a spontaneous reaction - correct answer Reactants are higher energy than the
products
Change in free energy in a spontaneous reaction - correct answer Negative
Spontaneous reactions increase order/disorder - correct answer disorder
Energetically unfavorable reactions result in more or less ordered products - correct answer more
ordered
Exergonic reaction - correct answer releases energy
Spontaneous reactions are exergonic/endergonic - correct answer exergonic
What will slow down the rate of a spontaneous (or any) reaction? - correct answer higher activation
energy
Endergonic reactions consume___________ - correct answer energy
Dehydration synthesis is spontaneous/nonspontaneous - correct answer non spontaneous
, What will cause a reaction to move toward one direction over another (relating to energy) at
equilibrium - correct answer The greater the difference in energy the more one side will be favored
at equilibrium
Hydrolysis is a spontaneous/non spontaneous reaction - correct answer spontaneous
Reaction at equilibrium - correct answer no net changes in amounts of reactants and products
Change in entropy as a reaction approaches equilibrium - correct answer increased entropy
Two factors that affect the direction of a reaction - correct answer -Difference in free energy
-relative concentrations of reactants and products
glycolysis - correct answer conversion of glucose into pyruvate molecules
Metabolism - correct answer Complex web of sequential reactions that organisms process energy
through
The breakdown of sucrose is exergornic/endergonic - correct answer exergonic
What slows down the breakdown of sucrose - correct answer High energy intermediate (requires
high activation energy)
glycosidase - correct answer enzyme that hydrolyzes sucrose to glucose and fructose
Affect of enzyme on reaction - correct answer increased rate
Direction that an enzyme will move a reaction - correct answer enzymes can work in either the
forward or reverse direction but will favor the direction that has lower energy
Source of energy in ATP - correct answer high energy phosphoanhydride bonds
Net result of coupled reactions - correct answer Negative deltaG
