Identify the structures marked with arrows. From top left to bottom right
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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.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Building glycogen from glucose molecules is an example of what