Which of the following is false about the structure of enzymes? Every enzyme has an active site. An enzyme can catalyze most reactions if the reactants are at a high concentration. An enzyme’s active site is determined by the shape of the enzyme. Enzymes speed up reaction rates.

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.

How can you approximate the number of calories required to keep you in energy balance?

The organelle pictured is found in cells of and is theorized to have once been an independent organism.