How many phosphate groups are part of a nucleotide?
A) only 1
B) only 2
C) only 3
D) 1, 2 or 3
D
You might also like to view...
Why are elements heavier than iron less abundant than those that are lighter?
A. This is one of the mysteries of cosmic formation that has yet to be answered. B. Because they tend to be unstable, and easily undergo fission C. Because the duration of a supernova is relatively short D. Spectral evidence suggests they are only rare here on Earth.
Fusion is not currently commercially viable because
A. the fuel necessary for fusion reactions is rare and expensive. B. the waste produced by fusion reactions is highly toxic to humans. C. technology has not yet successfully achieved conditions needed for reactions for more than a fraction of a second. D. All of the answers are correct.
Why are phytoplankton vital for life on Earth to thrive? How many categories of phytoplankton are there?
How does hail form? What factors govern the ultimate size of hailstones?
What will be an ideal response?