Reference no: EM132279666

1. Spontaneous processes, which do not require an input of energy, are constantly increasing the disorder (entropy) of the universe. Energetically, this means that, over time, considerable and ever-increasing amounts of energy are being transformed to heat. This is a statement of which of the following:

A. The third law of thermodynamics

B. The second law of thermodynamics

C. The first law of thermodynamics

2. Choose the pair of terms that correctly complete this sentence: Catabolism is to anabolism as is to

A. exergonic; spontaneous

B. exergonic; endergonic

C. free energy; entropy

3. Which of the following statements regarding enzymes is true?

A) Enzymes increase the rate of a reaction by making the reaction more exergonic.

B) Enzymes increase the rate of a reaction by lowering the necessary activation energy.

C) Enzymes have no effect on the rate of reactions; they are only important in transporting oxygen

4.The active site of an enzyme is the region that:

A) Only binds allosteric regulators of the enzyme.

B) Binds with the substrate molecule and is actively involved in the catalytic reaction which the enzyme speeds up.

5. Where are the proteins of the electron transport chain located?

A) cytosol

B) mitochondrial outer membrane

C) mitochondrial inner membrane

D) mitochondrial intermembrane space

6. The primary role of oxygen in cellular respiration is to

A) yield energy in the form of ATP as it is passed down the respiratory chain.

B) act as an acceptor for electrons and hydrogen, forming water.

C) combine with carbon, forming C02.

D) combine with lactate, forming pyruvate.

7. When hydrogen ions are pumped from the mitochondrial matrix across the inner membrane and into the intermembrane space, the result is the

A) formation of ATP.

B) reduction of NAD+.

C) restoration of the Na+/K+ balance across the membrane.

D) creation of a proton-motive force.

8. Where is ATP synthase located in the mitochondrion?

A) electron transport chain

B) outer mitochondrial membrane

C) inner mitochondrial membrane

D) mitochondrial matrix

9. Which of the following produces the most ATP when glucose (C6H1206) is completely oxidized to carbon dioxide (C02) and water?

A)glycolysis

B)fermentation

C)oxidation of pyruvate to acetyl COA

D) citric acid cycle

E) oxidative phosphorylation

10. In prokaryotes, where are the protein complexes for electron transport located if cellular respiration occurs?

A) in the inner mitochondrial membrane.

B) in the outer mitochondrial membrane.

C) in the plasma membrane of the cell.

D) in the cytoplasm.