1
Chapter 7 Metabolism
7.1 The Role of Energy in Life
EASY
1. Looking around your home, which of the following is not an example of potential energy?
A. making popcorn in the microwave b. potato chips in a bag
c. gasoline in your car d. candy in a jar
MEDIUM
2. In the microbiology lab, you observe an agar plate containing enriched medium covered with bacterial
colonies. The enriched agar represents _________ while the bacterial colonies represent ___________________.
Which of the following terms BEST completes this statement?
a. kinetic energy/potential energy B. potential energy/kinetic energy
c. source of ATP/ clonal growth d. kinetic energy/source of ATP
HARD
3. We refer to ATP (Adenosine Triphosphate) as the energy money or currency of the cell. In a previous
chapter you learned about the 4 groups of organic molecules critical to life. To which group does ATP
belong?
a. carbohydrates because of the sugar
b. proteins because of the 3 dimensional structure
c. lipids because of the hydrogen bonds
D. nucleic acids because of the nitrogenous bases
EASY
4. Catabolism is a(n) _____________________ reaction resulting in the breakdown of a large macromolecule
into smaller subunits with the subsequent release of energy.
a. endergonic b. endothermic C. exergonic d. rapid
EASY
5. The process in which a cell builds a macromolecule from smaller subunits and requires an input of
energy to make the new chemical bonds is called _________________.
a. anabolism b. catabolism c. exergonic d. exothermic
MEDIUM
6. Match the correct terms with its descriptive phrase:
endergonic reaction B a. E.coli breaks down glucose in nutrient medium
exergonic reaction D b. input of energy into synthesis reaction
catabolism A c. production of proteins from amino acids
anabolism C d. reduction in potential energy of molecules
7.2 Energy Production Principles
EASY
7. Which sequence of terms correctly fits the following statement?
A redox reaction occurs when the removal of electrons (i.e. _________________) from one compound results
in the addition of electrons (i.e. ___________________) to another compound.
a. reduction/oxidation B. oxidation/reduction
, 2
EASY
8. Redox reactions are used in cellular processes to move _______ from one compound to another.
a. phosphate groups b. energy c. hydrogen atoms d. phosphorus atoms
MEDIUM
9. Which of the following are activated carriers in cellular processes?
a. NAD+ and FADH b. NADH and FADH2 c. NAD+ and FADH2 D. NADH and FADH
EASY
10. The energy used to create the bond that attaches the 3 rd phosphate group onto ADP thus making ATP
comes from _____________.
a. anabolism b. activation energy c. catabolism d. synthesis reactions
MEDIUM
11. How much energy is stored in the bonds between the 2 and 3 Phosphate groups in ATP?
A. 7.3 kcal/mol b. 6.3 kcal/mol c. 5.3 kcal/mol d. 8.3 kcal/mol
HARD
12. What makes ATP the ideal biological molecule to serve as the “energy currency” of the cell?
a. ease of breaking bonds between phosphate groups
b. negative charge on three phosphate groups helps hydrolysis of terminal group
c. low energy in bonds between phosphate groups
D. choices A and B are correct
e. choices A, B and C are correct
HARD
13. Fill in the blanks in the statements below using the following terms:
substrate oxidative photophosphorylation
(a) In substrate –level phosphorylation the high-energy third phosphate group is transferred by an
enzyme to ADP creating ATP.
(b) When a series of redox reactions are initiated by the absorption of light energy this results in the
photophosphorylation of ATP.
(c) In aerobic respiration the energy needed for oxidative phosphorylation is provided by the activated
carriers NADH and FADH2
(d) Chemiosmosis is an essential part of both photophosphorylation and oxidative phosphorylation.
MEDIUM
14. This protein is referred to as the “coupling factor” in cellular processes because it makes possible the
use of the energy released from the H+ gradient with the phosphorylation of ADP.
a. NADHP b. phosphorylationase C. ATP synthase d. photosynthase
7.3 Glycolysis and Fermentation
MEDIUM
15. Which of the following is a characteristic of a “fuel”?
a. organic molecule that stores a lot of energy released in exergonic reactions
b. a highly reduced molecule that can be easily oxidized
Chapter 7 Metabolism
7.1 The Role of Energy in Life
EASY
1. Looking around your home, which of the following is not an example of potential energy?
A. making popcorn in the microwave b. potato chips in a bag
c. gasoline in your car d. candy in a jar
MEDIUM
2. In the microbiology lab, you observe an agar plate containing enriched medium covered with bacterial
colonies. The enriched agar represents _________ while the bacterial colonies represent ___________________.
Which of the following terms BEST completes this statement?
a. kinetic energy/potential energy B. potential energy/kinetic energy
c. source of ATP/ clonal growth d. kinetic energy/source of ATP
HARD
3. We refer to ATP (Adenosine Triphosphate) as the energy money or currency of the cell. In a previous
chapter you learned about the 4 groups of organic molecules critical to life. To which group does ATP
belong?
a. carbohydrates because of the sugar
b. proteins because of the 3 dimensional structure
c. lipids because of the hydrogen bonds
D. nucleic acids because of the nitrogenous bases
EASY
4. Catabolism is a(n) _____________________ reaction resulting in the breakdown of a large macromolecule
into smaller subunits with the subsequent release of energy.
a. endergonic b. endothermic C. exergonic d. rapid
EASY
5. The process in which a cell builds a macromolecule from smaller subunits and requires an input of
energy to make the new chemical bonds is called _________________.
a. anabolism b. catabolism c. exergonic d. exothermic
MEDIUM
6. Match the correct terms with its descriptive phrase:
endergonic reaction B a. E.coli breaks down glucose in nutrient medium
exergonic reaction D b. input of energy into synthesis reaction
catabolism A c. production of proteins from amino acids
anabolism C d. reduction in potential energy of molecules
7.2 Energy Production Principles
EASY
7. Which sequence of terms correctly fits the following statement?
A redox reaction occurs when the removal of electrons (i.e. _________________) from one compound results
in the addition of electrons (i.e. ___________________) to another compound.
a. reduction/oxidation B. oxidation/reduction
, 2
EASY
8. Redox reactions are used in cellular processes to move _______ from one compound to another.
a. phosphate groups b. energy c. hydrogen atoms d. phosphorus atoms
MEDIUM
9. Which of the following are activated carriers in cellular processes?
a. NAD+ and FADH b. NADH and FADH2 c. NAD+ and FADH2 D. NADH and FADH
EASY
10. The energy used to create the bond that attaches the 3 rd phosphate group onto ADP thus making ATP
comes from _____________.
a. anabolism b. activation energy c. catabolism d. synthesis reactions
MEDIUM
11. How much energy is stored in the bonds between the 2 and 3 Phosphate groups in ATP?
A. 7.3 kcal/mol b. 6.3 kcal/mol c. 5.3 kcal/mol d. 8.3 kcal/mol
HARD
12. What makes ATP the ideal biological molecule to serve as the “energy currency” of the cell?
a. ease of breaking bonds between phosphate groups
b. negative charge on three phosphate groups helps hydrolysis of terminal group
c. low energy in bonds between phosphate groups
D. choices A and B are correct
e. choices A, B and C are correct
HARD
13. Fill in the blanks in the statements below using the following terms:
substrate oxidative photophosphorylation
(a) In substrate –level phosphorylation the high-energy third phosphate group is transferred by an
enzyme to ADP creating ATP.
(b) When a series of redox reactions are initiated by the absorption of light energy this results in the
photophosphorylation of ATP.
(c) In aerobic respiration the energy needed for oxidative phosphorylation is provided by the activated
carriers NADH and FADH2
(d) Chemiosmosis is an essential part of both photophosphorylation and oxidative phosphorylation.
MEDIUM
14. This protein is referred to as the “coupling factor” in cellular processes because it makes possible the
use of the energy released from the H+ gradient with the phosphorylation of ADP.
a. NADHP b. phosphorylationase C. ATP synthase d. photosynthase
7.3 Glycolysis and Fermentation
MEDIUM
15. Which of the following is a characteristic of a “fuel”?
a. organic molecule that stores a lot of energy released in exergonic reactions
b. a highly reduced molecule that can be easily oxidized
