A phospholipid is a .A. nonpolar lipid molecule that is made polar by the addition of a phosphateB. nonpolar lipid molecule that is made amphipathic by the addition of a phosphateC. polar lipid molecule that fully interacts with waterD. polar lipid molecule that fully repels water

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.

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.

Why has two different alleles for the same trait?