Which of the following nucleotides is not found in DNA?
A) adenine
B) uracil
C) thymine
D) guanine
Answer: B) uracil
Biology & Microbiology
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Which of the following are NOT phagocytes?
A) dendritic cells B) monocytes C) neutrophils D) erythrocytes
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Plants using the C4 photosynthetic pathway
A) use rubisco to catalyze the reaction between O2 and RuBP. B) have a lower rate of photosynthesis than plants using the C3 photosynthetic pathway. C) divide photosynthesis between mesophyll and bundle sheath cells. D) are mostly trees.
Biology & Microbiology
Gene flow is accomplished by ________
A) migration B) sexual recombination C) mutation D) natural selection
Biology & Microbiology
In aquatic ecosystems, the highest nutrients levels are found in areas that have the
A) lowest light levels. B) highest elevation. C) fewest sediments. D) highest temperatures. E) highest light levels.
Biology & Microbiology