AP BIO (processes)

6) ATP is produced in all of the following EXCEPT

a. glycolysis

b. the Krebs cycle

c. the Calvin cycle

d. cyclic and noncyclic light-reactions

e. the electron transport system with chemiosmosis

C

20) Which two cellular organelles in eukaryotes have both electron transport systems and chemiosmotic mechanisms?

a. Ribosomes and endoplasmic reticulum

b. Chloroplasts and endoplasmic reticulum

c. Chloroplasts and mitochondria

d. Mitochondria and nuclei

e. Nuclei and Golgi apparatus

C

9.The function of which of the following organelles directly requires oxygen?

A. Ribosome

B. Mitochondrion

C. Nucleus

D. Centriole

E. Golgi apparatus

B

41.Which of the following statements about mitochondrial chemiosmosis is NOT true?

(A) A proton gradient is established across the inner membrane of the mitochondrion.

(B) The potential energy released from the mitochondrial proton gradient is used to

produce ATP.

(C) The mitochondrial proton gradient provides energy for muscle contraction.

(D) Proteins embedded in the inner mitochondrial membrane play an important role in

ATP synthesis.

(E) Heat energy is required to establish the electron transport chain.

E

42.ATP serves as a common energy source for organisms because

(A) it is the smallest energy molecule

(B) it stores the least energy of any energy source

(C) its energy can be easily transferred to do cellular work

(D) it is extremely stable and can be stored in the cell for long periods of time

(E) traces of it have been found in fossils of ancient organisms dating back to the

beginning of life on Earth

C

44. Which metabolic process is common to both aerobic cellular respiration and alcoholic

fermentation?

(A) Krebs cycle

(B) Glycolysis

(C) Electron transport chain

(D) Conversion of pyruvic acid to acetyl CoA

(E) Production of a proton gradient

B

54.Which of the following directly produces the most ATP per mole of glucose during

aerobic cellular respiration?

(A) Which of the following directly produces the most ATP per mole of glucose

during aerobic cellular respiration?

(B) Electron transport chain and hemiosmosis

(C) Substrate-level phosphorylation

(D) Kreb's cycle

(E) Alcoholic fermentation

B

18.In a mesophyll cell of a leaf, the synthesis of ATP occurs in which of the following:

1. Ribosomes

2. Mitochondria

3. Chloroplasts

A. 1 only

B. 2 only

C. 3 only

D. 2 and 3 only

4. 1, 2 and 3

D

41.During respiration most ATP is formed as a direct result of the net movement of

A. Potassium against a concentration gradient

B. protons down a concentration gradient

C. electrons against a concentration gradient

D. electrons through a channel

E. sodium ions into the cells

B

49.Which of the following pathways for the transformation of cellular energy most likely evolved first?

A. Cyclic photophosphorylation

B. Citric acid cycle

C. Calvin cycle

D. C4 photosynthesis

E. Glycolysis

E