What does tryptophan bind to when it is present in E. coli? A. trp operon B. trp promoter C. trp operator D. trp repressor

Which DNA or RNA consists of a single copy of a gene

Is the domain Eukarya, which physical trait is used to classify organisms?

Two patients were admitted to the hospital. One patient was diagnosed with salmonella poisoning and the other had West Nile. Which best describes their sicknesses? Patient one has a communicable disease and patient two has a noncommunicable disease.

Cell signaling involves converting extracellular signals to specific responses inside the target cell. Different molecules are involved at each stage of the process.

In most cases would a soil sample from temperate deciduous forest be more or less nutrient-rich than soil sample from tropical rain forest

1. Some worms eat at night (meaning they are nocturnal) and some worms eat during the day (meaning they are diurnal).

This soil is made up equal parts of clay, sand, and silt. It is called

Which characteristics of capillaries cause restriction of blood flow

One cell has two copies of chromosomes while the other has none. What could have caused this

Suppose you want to set up an experiment to test the hypothesis that electromagnetic fields cause CCD, and you have 6 hives to work with. Which of these is the best experimental setup? A. 6 hives exposed to high levels of EMF B.