Which sentence describes the width of a DNA double helix?
a. The width is greater where purines are present than where pyrimidines are present.
b. The width is narrower where adenine is present than where cytosine is present.
c. The width is constant.
d. The width varies randomly.
Ans: c. The width is constant.
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Paired homologous chromosomes are found at
the spindle equator during a. metaphase I. b. telophase I. c. prophase II. d. metaphase II. e. anaphase II.
To include your eyes and ears in the same section, you would need to cut your body in which plane?
a. median b. frontal c. sagittal d. transverse e. cephalic
Translation is initiated at the ____
a. AUG codon b. UAG codon c. anticodon d. promoter e. downstream sequence
The major carrier of chemical energy in all cells is:
A) acetyl triphosphate. B) adenosine monophosphate. C) adenosine triphosphate. D) cytosine tetraphosphate. E) uridine diphosphate