The text uses the term supernova for the event observed in 1054. How would you describe a supernova based on the accounts provided by the Chinese , Arab, and Native American observers ?

The trp operon in e.coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.

What are the result of when individual components in an organism interact with others to create noval stucture and function called

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.