Which answer best explains why atp is regarded as a renewable resource within the cell?

adp can be used to regenerate atp.
adp is fueled by photosynthesis and sunlight is renewable.
atp can easily be made using sugars and fat molecules.
atp sources can always be obtained by the organism.

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.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?