When

e. coli cells produce the amino acid tryptophan, a cluster of five genes is transcribed together. this cluster of genes is referred to as the?

Which statements describe why organisms are classified? Check all that apply. Classification shows how closely related organisms are to each other. Classification makes it easier to identify the color of an organism.

In the digestive system what part of the body precedes the small intestine?

This a trait that is passed down to us from our parents or other relative, like grandparents. It is passed down through genes.

You are studying a transport molecule. It appears to bind temporarily to the molecule to be transported. During normal transport, no energy is expended.

Which of the following organisms in the soil food chain does not obtain energy directly from plants? a. bacteria b. fungi c. protozoa d. nematodes

If a tree ring you are measuring is very thick, what does that mean? A. That year was cold and dry B. That year was warm and very dry C. That year was warm and wet D. None of the above

Which of the following represents the treatment option most likely to avoid the evolution of drug-resistant HIV (assuming no drug interactions or side effects) ?

Which of the following connective tissues is richly vascularized and consists of more cells than extracellular matrix? A) Adipose b) Dense regular C) Areolar D) Hyaline cartilage

Humans and apes have five fingers they can use to grasp objects. do you think these are analogous or homologous structures? explain your answer.

During which two minute time period is the temperature of the water changing fastest?