Which statement about the structure of RNA is true?
a. RNA is a double-stranded helix.
b. RNA nucleotides contain cytosine and guanine.
c. RNA nucleotides contain thymine and adenine.
d. Deoxyribose is the five-carbon sugar in RNA.
b. RNA nucleotides contain cytosine and guanine.
You might also like to view...
Which of the following crosses lipid bilayers the fastest?
A) a sodium ion B) a small, polar molecule like water C) a large, polar molecule like glucose D) a small, nonpolar molecule like oxygen (O2)
A concept presented by Charles Lyell, called ____, contendsthe geological processes that sculpted Earth’s surface
over long periods of time are exactly the same as the processes observed today
a. catastrophismb. sedimentation c. orthogenesis d. gradualism e. uniformitarianism
While walking in a tropical forest, you come upon a 6-meter-tall plant that shows no evidence of seed production. The plant is most likely a(n)
A) angiosperm. B) gymnosperm. C) alga. D) bryophyte. E) fern.
Which growth phase has the largest increase in cell numbers per unit of time?
a. death phase b. exponential phase c. lag phase d. stationary phase