The food an animal eats provides the energy needed for that animals life processes. the following diagram shows an example of how energy can flow through the environment to a humans cells. which energy source would appropriately fill the first box?

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 how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis