Which of the following statements concerning messenger RNA is FALSE?
a. It contains the base uracil instead of thymine.
b. It is single-stranded.
c. It contains the same sugar that is found in DNA.
d. It is able to pass through the nuclear membrane.
e. It is involved in the synthesis of proteins.
c
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At the present rate of economic growth in the developed world, what can we expect for the future?
a. A decrease in the availability of freshwater will make irrigation more limited. b. Major grain-producing areas will find new sources of fresh water for irrigation. c. Less fossil fuels will be used because of the increase in nuclear energy. d. New sources of food and energy production will make climate changeless of an issue.
"Population control" in states refers to police and military forces.
Answer the following statement true (T) or false (F)
It was likely that early hominins of the Lower Paleolithic were:
A. skilled hunters of large game B. strict vegetarians C. hunted large game, but only in groups disturbed by natural processes D. mostly scavengers when it came to acquiring meat
In industrialized nations, the age of menarche will be __________ than in non-industrialized nations
a. the same b. slightly older c. younger d. much older