Astar is moving towards earth. an astronomer plans to measure the distance of the star from earth by observing the red shift in its spectrum. which of these statements best explains why the astronomer's method of measuring the star distance is inappropriate?
the spectral shift of moving stars cannot be observed.
a red shift can be observed when the star moves away from earth.
common instruments cannot measure the red shift accurately.
rate of motion of stars cannot be matched with the rate of measuring distances.

It may have some of the same features that it’s mother does but, it may have some of the same features that it’s father has as well.

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

The parents of an infant with newly diagnosed cystic fibrosis ask a nurse what causes the foul-smelling, frothy stool. what is the  best  response by the nurse?