Flexible bacteria with a helical shape are called ________.
A. vibrios
B. coccobacilli
C. spirilla
D. spirochetes
Answer: D
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Which of the following models for RNA polymerase II transcription termination is analogous to ?-dependent termination in bacteria?
A. the antiterminator model B. the submarine model C. the torpedo model D. the allosteric model E. the hairpin model
When an ant tends an aphid, it would be benefiting the aphid by removing honeydew from the aphids
anus, and benefiting from obtaining carbon.
Indicate whether the statement is true or false.Assume that a wild-type sequence is 5' AGCCTAC 3'. Which sequence could be produced by a transversion?
A) 5' AGTCTAC 3' B) 5' AGCCGCCGCCGCCTAC 3' C) 5' AGCCCAC 3' D) 5' ATCCTAC 3' E) 5' AGCCTGC 3'
Which acid is a severe air pollutant?
1.primary producer 2.primary consumer 3.secondary consumer 4.tertiary consumer