5

18) As shown in this figure, the top triglyceride (a) has ____; the bottom  
      triglyceride has ____. 
 

A) Double bonds and is saturated; no double bonds and is unsaturated 

B) No double bonds and is saturated; double bonds and is unsaturated 

C) No double bonds and is unsaturated; double bonds and is saturated 

D) Double bonds and is unsaturated; double bonds and is unsaturated 

E) Double bonds and is unsaturated; no double bonds and is saturated 

 
19) Which of the following reactions requires the removal of water to form a  
       covalent bond? 
 

A) Glycogen -> glucose subunits 

B) Peptide -> amino acids 

C) Cellulose -> glucose 

D) Glucose and galactose -> lactose 

E) Fat -> fatty acids and glycerol 

 
20) Which of the following refers to the amino acid sequence of proteins? 
 A) 

Primary 

 B) 

Secondary 

 C) 

Tertiary 

 D) 

Quaternary 

E) None of the above 

 
21) Which is not a feature of a prokaryotic cell? 
          A) A plasma membrane 
 

B) A nuclear membrane 

 C) 

Ribosomes 

 D) 

Enzymes 

 E) 

DNA 

 
22) After being formed by ribosomes on the endoplasmic reticulum, what is the  
      next organelle to which a protein might be transported? 
          A) Mitochondria 
 

B) Smooth endoplasmic reticulum 

 C) 

Nucleus 

D) Golgi apparatus 

 E) 

Chloroplast 

 
23) Which type of cell does NOT produce cell walls? 
          A) Animal cells 
 

B) Plant cells 

 C) 

Archaea 

 D) 

Bacteria 

E) Prokaryotic cells