X-Ray diffraction photographs by Wilkins and Franklin suggested that
A. DNA and RNA are the same molecules
B. DNA is composed of either purines or Pyrimidines, but not both
C. DNA molecules are arranged as tightly coiled helix
D. DNA and proteins have the same basic structure
Answer: C
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Biology
- The osmoregulatory/excretory system of a freshwater flatworm is based on the operation of _____.
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- Components of the transulfuration pathway include all of the following except _____.
- Homogentisate is an intermediate in the degradation of __________.
- Amino acids whose degradation yields a-ketoglutarate include all of the following except _________.
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- SAM is a methyl donor in the synthesis of ______.
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