Which complementary base pairings occur between DNA and RNA?
A) A to T and C to G
B) T to C and A to G
C) G to C and A to U
D) C to U and A to T
C
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Which of the following is included as part of the Eubacteria?
A) methanogens B) thermacidophiles C) cyanobacteria D) halobacteria E) sulfobacteria
Low-growing, hardy plants of the __________ occur
at high latitudes, where there is a layer of __________. At high altitudes, similar plants grow as __________. Fill in the blank(s) with the appropriate word(s).
What percentage of the urea filtered by the kidneys is excreted in the urine?
a. 10 percent b. 20 percent c. 50 percent d. 75 percent e. 100 percent
A bryophyte having a single large hloroplast in each cell belongs to the phylum:a
Hepatophyta. b. Pterophyta. c. Lycopodiophyta. d. Anthocerophyta. e. Bryophyta.