How are plant and animal cells different?

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.

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Regarding most of the narrator’s story, which word best describes the tone?