An essential amino acid question 24 options: 1) can be synthesized in the body if there is a nitrogen source. 2) can be synthesized in the body if caloric intake is adequate. 3) cannot be synthesized in the body in sufficient quantity to meet body needs. 4) can be formed in the body from semiessential amino acids.

Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b.hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.