Organisms that are characterized by being unicellular, photosynthetic, and having double shells made of silica are known as
A. kelps.
B. foraminifera.
C. dinoflagellates.
D. diatoms.
E. euglenoids.
Answer: D
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The production of large quantities of a particular DNA sequence is known as gene ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not a reason for the importance of mRNA processing in eukaryotes?
A) longevity in the cytoplasm B) coupling of transcription and translation C) presence of a nuclear membrane D) turnover in the cytoplasm E) removal of introns
Manatees are mostly found in:
a. cold polar waters. b. Antarctica. c. tropical estuaries. d. temperate coastal areas. e. Eastern Pacific Ocean.
Which of the following species has become a pest after its introduction elsewhere from North America?
A) chestnut blight B) honeybee mite C) zebra mussel D) comb jelly