Global warming of Earth's oceans may have a direct effect on global photosynthetic rates and carbon storage, given that
A) 30% of the world's photosynthesis is done by aquatic protists.
B) 20% of the world's photosynthesis is done by aquatic protists.
C) 50% of the world's photosynthesis is done by aquatic protists.
Answer: C) 50% of the world's photosynthesis is done by aquatic protists.
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Which of the following occurs in E. coli when lactose is absent from its environment?
A. Large amounts of ?-galactosidase, lactose permease, and galactoside transacetylase are made. B. Trace amounts of ?-galactosidase, lactose permease, and galactoside transacetylase are made. C. No ?-galactosidase, lactose permease, and galactoside transacetylase is made. D. The lac operon is induced. E. Polycistronic mRNA levels would be very high.
What occurs in monocot seed germination that
does NOT occur in eudicot seed germination?
a. starch hydrolysis b. the cotyledon does not emerge from the seed c. the embryonic root emerges last d. meristem cells do not start dividing until the seedling is fully established e. all of these things occur in both monocot and eudicot seed germination
Similar families of organisms are next grouped together in the same:a
class. b. kingdom. c. order. d. phylum. e. genu
Which of the following is a scientific name?
A. robin B. Marmota C. tiger D. Apis mellifera