DDT and PCBs are no longer legally used anywhere in the U.S
Indicate whether the statement is true or false
T
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During sporulation in Bacillus subtilis, the response regulator that positively controls many genes needed for sporulation and negatively controls genes not needed during sporulation is
A. SpoOB. B. SpoOF. C. SpoOC. D. SpoOA.
Which one of the following statements about RNA is correct?
A. RNA is a more stable molecule than DNA. B. RNA has the same 5-carbon sugars as DNA. C. RNA uses the same pyrimidine bases as DNA. D. RNA uses the same purine bases as DNA. E. All of these choices are correct.
All animals are
a. multicellular, heterotrophic, and diploid. b. multicellular, heterotrophic, and haploid. c. multicellular, autotrophic, and diploid. d. multicellular, autotrophic, and haploid. e. unicellular, autotrophic, and haploid
Every atom of the same element has an equal number of electrons and protons
Indicate whether the statement is true or false