The informal name for an involuntary muscle cramp that can last for a few minutes, hours, or even days is _____.
a. charley horse b. muscle contraction
c. stitch
d. kink
Question 2
The first system of approximating the value of a food for nutritional purposes became known as _____.
a. spectrophotomety
b. liquid chromatography
c. gas chromatography d. proximate analysis