1. which of these is a physical property of wood?

a. wood can burn.

b. wood can rot.

c. wood does not rust.

d. wood is softer than coal.

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.

Classify the structures as homologous or analogous, depending on their structure and function.

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?