Photovoltaic cells produce electricity using the power of .

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.

Witch type of microscope is used to view very small cell components like proteins and dna?

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water