A site at the 5' end of a gene where RNA polymerase attaches to initiate transcription is called a(n).
A. operon.
B. repressor.
C. promoter.
D. operator.
E. CAP.
C. promoter.
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In general, repressor proteins that act to inhibit eukaryotic gene expression:
A. interfere with communication between Pol II and DNA-binding transactivators. B. block Pol II-mediated polymerization of ribonucleotides. C. bind to the C-terminal domain of Pol II. D. disrupt HMG protein-DNA interactions.
Sandpipers are known to: a. be territorial of their beaches
b. feed on worms and fish. c. be very solitary birds. d. make long annual migrations.
Which cause of habitat destruction is fastest-growing and most destructive?
A. Conversion to agriculture B. Urbanization C. Mining and quarrying D. Dams E. Deforestation F. Draining wetlands
Single celled eukaryotic cells belong to which of the following kingdoms?
A. Monera B. Protista C. Fungi D. Animalia E. Plantae