17

28) Which of these processes occurs in the cytosol? 
          A) Glycolysis 
 

B) Electron Transport System 

C) Krebs Cycle 

 D) 

Photosynthesis 

 E) 

Chemiosmosis 

 
29) During the Krebs cycle: 
          A) The products of glycolysis are further broken down, generating  
 

       additional ATP and NADH molecules 

B) High-energy electron carriers pass their energy to molecules of sugar,  

               which store them as potential energy 
 

C) Cellular respiration can continue even in the absence of oxygen 

D) Pyruvate molecules are converted to lactate 

E) NADH gets oxidized to NAD

+ 

 
30) The anaerobic breakdown of glucose is called 
 A) 

Glycolysis 

B) Electron Transport System 

C) Krebs Cycle 

 D) 

Photosynthesis 

 E) 

Fermentation 

 
31) What is the significance of the conversion of pyruvate to lactate during  
       fermentation? 
 

A) Pyruvate becomes available to enter the mitochondrial matrix 

B) The citric acid/Krebs cycle is initiated 

C) NAD+ is regenerated for use in glycolysis 

D) ATP is produced 

E) The energy in pyruvate is used up 

 
32) If a species contains 40% guanine in its DNA, what is the percentage of  
       adenine that it would contain? 
 A) 

40% 

 B) 

60% 

 C) 

100% 

 D) 

20% 

E) 10% 

 
33) In an analysis of the nucleotide composition of DNA to see which bases are  
       equivalent in amount, which of the following is true? 
 

A) A = C 

B) A = G and C = T 

C) A + C = G + T 

D) A + T = C + G 

E) G = T