15

16) A molecule of glucose has the molecular formula C

6

H

12

O

6

.  Therefore it has __  

      atoms. 
          A) 3 
 B) 

12 

 C) 

6 

 D) 

24 

E) None of the above 

 
17) A lipid is a polymer made up of which kind of monomers? 
 

A) Glucose or modified glucose molecules 

B) Amino Acids 

 C) 

Nucleotides 

D) Alternating sugar and phosphate groups 

E) Fatty acids and glycerol

18) How are amino acids and proteins related? 
          A) Proteins are made up of chains of amino acids 
 

B) Amino acids are formed by joining together many proteins 

C) Proteins are a portion of an amino acid 

D) Proteins are chains of carbohydrates; amino acids are a type of lipid 

E) Amino acids are similar to fatty acids 

 
19) Fish sperm consists mostly of the male fish’s DNA.  If tested chemically, there  
      would be relatively high amounts of 
          A) Nitrogenous bases, sugar and phosphate groups 
 

B) Phospholipids and steroids 

C) Triglycerides and ATP 

D) Proteins and stored fats 

E) Amino acids and unsaturated fats 

 
20) Which of the following statements about prokaryotes is incorrect? 
 

A) Prokaryotes appeared on earth before eukaryotes 

B) Prokaryotes have circular pieces of DNA within their nuclei 

C) Prokaryotes contain cytoplasm 

D) Prokaryotes contain ribosomes 

E) Some prokaryotes con photosynthesize 

 
21) In plant cells, chloroplasts 
          A) Serve the same purpose as mitochondria do in animal cells 
 

B) Are the site of conversion of light energy into chemical energy 

C) Play an important role in the breakdown of plant toxins 

D) Generate turgor pressure 

E) A and B are correct