A researcher has isolated an organic,water-soluble chemical from roses.After performing in-vivo tests,the scientist determines that the chemical supplies no energy for cells,but protects cell membranes from being damaged by certain environmental factors.Based on this information,the researcher may have discovered a(an) _________.
A) precursor
B) antioxidant
C) autoanalyzing agent
D) amino acid
Correct Answer:
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Q13: Which of the following organs is the
Q14: _ prevent or limit the ability of
Q15: Why is taking excess amounts of fat-soluble
Q16: _ are fat-soluble vitamins.
A)Vitamins K,E,and D
B)Vitamins B-12,B-6,and
Q17: _ are water-soluble vitamins.
A)Pantothenic acid,vitamin C,and thiamin
B)Vitamin
Q19: _ are fat-soluble vitamins.
A)Vitamins K,D,and A
B)Niacin,riboflavin,and thiamin
C)Pantothenic
Q20: Which of the following statements is true?
A)Scientists
Q21: _ is added to refined cornmeal during
Q22: Which of the following substances is a
Q23: The human body can absorb some of
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