Mastering Bio Questions And Answers

1. Part A: In this reaction _____. *The products have less potential energy than the reactants.
Part B: In this reaction _____. *heat has been released into the environment.
Part C: The reaction A --> B + C + heat is released in a(n) _____ reaction. *Exergonic
Part D: A(n) _____ reaction occurs spontaneously. *Exergonic
Part E: Which of these reactions requires a net input of energy from its surroundings? *Endergonic
Part F: In cells, what is usually the immediate source of energy for an endergonic reaction? *ATP
Part G: The reaction ADP + P --> ATP is a(n) _____ reaction. *Endergonic
Part H: The energy for an endergonic reaction comes from a(n) _____ reaction.*Exergonic
Part I: What is the fate of the phosphate group that is removed when ATP is converted to ADP?*it is acquired by a reactant in an endergonic reaction.
Part J: This graph illustrates a(n) _____ reaction.*Endergonic
Part K: Select the INCORRECT association. *Exergonic….uphill
Part L: What is energy coupling? *The use of energy released from an exergonic reaction to drive an endergonic reaction
2. Part A: Which term describes the degree to which an element attracts electrons? *Electronegativity
Part B: Which terms describe two atoms when they form a bond in which electrons are completely transferred from one atom to the other? *Anion and Cation
Part C: Which of the following statements is true of the bonds in a water molecule? *Oxygen holds electrons more tightly than hydrogen does, and the net charge is zero
Part D: Which of the following statements is not true of most cellular redox reactions? *A hydrogen atom is transferred to the atom that loses an electron.
Part E: What kind of bond is formed when lithium and fluorine combine to form lithium fluoride? *Ionic
Part F: Gaseous hydrogen burns in the presence of oxygen to form water:

2H2 + O2 → 2H2 O + energy

Which molecule is oxidized and what kind of bond is formed? *Hydrogen, Polar
3. A cell has enough available ATP to meet its needs for about