Which of the following best describes nativism during the 1800s?

a- a policy favoring native-born americans over immigrants
b- an interest in learning about the native cultures of immigrants
c- a regional policy of maintaining traditional economic systems
d- a practice in most factories of hiring only native-born americans

Out of the choices given, the one that best describes nativism during the 1800s was a policy favoring native-born American over immigrants. People that were born in the United States believed that the natives should get jobs over any immigrants. The correct answer is A. 

Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of  amino acids  , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in  genes  . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called  transcription  ), and the mrna is transported to the  ribosome  . protein synthesis, also called  translation  , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the  nucleotides  of mrna three by three, in units called  codons  , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the  amino acid  chain goes on to be processed and folded to make the final, functional protein

It has been around since 1858 so b. false