A layer of membrane outside the protein coat of some viruses is called a(n)
A. capsomere.
B. capsid.
C. protein coat.
D. envelope.
E. plasmid.
D. envelope.
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Which of the following is a possible reason why DNA uses thymine instead of uracil?
A. Thymine is more stable than uracil. B. Cytidine is deaminated to uracil so it would be difficult for any repair mechanism to differentiate between uracil that belongs in the sequence and uracil that resulted from deamination. C. Adenine is deaminated to uracil so it would be difficult for any repair mechanism to differentiate between uracil that belongs in the sequence and uracil that resulted from deamination. D. When uracil is bound to a deoxyribose it will become more reactive, forming covalent bonds with other bases. E. None of these choicesis correct.
Coconuts in the form that we are used to seeing are actually
a. fruits. b. leaves. c. seeds. d. stems
Explain why it is important, from a global standpoint, to try to improve the efficiency of
photosynthesis in common crops. Specify which aspect(s) of photosynthesis we should target.
What will be an ideal response?The Western Blot technique detects
A. proteins. B. specific genetic marker sequence on genes. C. recombinant DNA. D. DNA. E. RNA.