What is the correct order of elements that comprise a functional protein encoding gene in a prokaryote?
A. Promoter, regulatory region, transcribed region, terminator
B. Regulatory region, promoter, transcribed region, terminator
C. Regulatory region, promoter, terminator, transcribed region
D. Promoter, transcribed region, regulatory region, terminator
B
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Dimers of IgA are present in
A) breast milk colostrum. B) saliva. C) tears. D) breast milk colostrum, saliva, and tears.
How do pathogens enter into plant tissues?
A. through wounds or damaged tissues B. through the stomata C. by secreting enzymes that weaken epidermal cells D. on the piercing mouthparts of insects feeding on the plants E. All the answer options are possible means to enter plant tissues.
The Lac repressor protein binds to the:
A. operator in the presence of allolactose. B. lacZ gene in the presence of allolactose. C. operator in the absence of allolactose. D. operator regardless of the presence or absence of allolactose.
Which of the following technologies allowed marine biologists to descend below the surface and observe marine organisms in their environment?
A) Sound Navigation Ranging SONAR B) The Chronometer C) Self-Contained Underwater Breathing Apparatus D) Floating Instrument Platform FLIP