The trp operon of E. coli is regulated by attenuation. If tryptophan levels are high in the cell, . Multiple Choice regions 2

Which best describes a rhinovirus? o a. a virus that causes a common cold o b. a protective shell around a virus o c. a tube the comes off a virus o d. a piece of dna transferred by a virus

One gene can influence trait(s). one trait can be determined by gene(s).

Time ! for a smell to begin the process of registering in your brain, first you must a) inhale odor molecules into the nasal cavity b)transduce scent chemicals c)have a scent to inhale d)all answers can work