A bacterial gene regulatory system is likely have
_____ a coding sequence.
_____ an operator.
_____ one or more introns.
_____ a motor.
_____ a ribosome recognition site.
__X__ a coding sequence.
__X__ an operator.
_____ one or more introns.
_____ a motor.
__X__ a ribosome recognition site.
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Glial cells perform all of the following functions EXCEPT ____
a. nourish neurons b. control the concentrations of electrolytes c. protect and support neurons d. produce action potentials e. insulate axons
The parasite that is responsible for causing malaria is called
A. Entamoeba. B. Paramecium. C. Plasmodium. D. Giardia. E. Chlamydomonas.
The alpha helix and beta pleated sheet are examples of
A. tertiary structure. B. primary structure. C. gamma structure. D. secondary structure. E. quaternary structure.
Which of the following is a product of recombinant DNA technology?
A. bacteria that produce vitamins B. bacteria that produce insulin C. microbes that produce vaccines D. humans that produce vaccines E. microbes that produce vitamins, insulin and vaccines