41.  Which of the following vitamins is mismatched with its function?  
A.  vitamin D – bone growth
B.  vitamin A – rhodopsin synthesis
C.  folate – synthesis of clotting factors
D.  vitamin C – collagen synthesis
E.  vitamin B₁₂ – red blood cell production

42.  What would happen to a vitamin if its chemical structure is destroyed by catabolism?  
A.  It could be recycled.
B.  It would become nonfunctional.
C.  It becomes a provitamin.
D.  It becomes a coenzyme.
E.  Nothing; this is normal.

43.  Minerals  
A.  are organic nutrients.
B.  can be manufactured by the body if the diet does not supply enough.
C.  can serve as buffers and components of enzymes.
D.  are found in high concentrations in refined cereals and breads.
E.  are not necessary for normal metabolic function.

44.  Which of the following minerals is important in acid-base balance?  
A.  calcium
B.  chlorine
C.  iron
D.  manganese
E.  sodium

45.  Which of the following minerals is part of the hemoglobin molecule?  
A.  calcium
B.  iodine
C.  iron
D.  zinc
E.  fluorine

46.  Which of the following minerals is mismatched with its function?  
A.  calcium – bone formation
B.  zinc – hemoglobin synthesis
C.  potassium – muscle and nerve function
D.  cobalt – erythrocyte production
E.  selenium – component of many enzymes

47.  The Daily Values appearing on food labels are based on a ________ kilocalorie reference diet.  
A.  1200
B.  1500
C.  2000
D.  2500

48.  The sum of all chemical reactions that occur in the body is known as  
A.  absorption.
B.  metabolism.
C.  digestion.
D.  catabolism.
E.  anabolism

49.  Which of the following statements is true?  
A.  Catabolic reactions are synthesis reactions.
B.  Anabolic reactions are involved in the production of proteins from amino acids.
C.  The energy derived from anabolism is used to drive catabolism.
D.  Anabolic reactions release energy.
E.  Catabolic reactions consume energy.

50.  The digestion of complex carbohydrates is an example of  
A.  anabolism.
B.  synthesis.
C.  absorption.
D.  catabolism.