To observe how plants compete for space, seeds were tested in an experiment. The same amount of soil was put into each of five plastic cups. Two seeds were planted in the first cup, 4 seeds were planted in the second cup, 8 seeds in the third cup, and 16 seeds were planted in the fourth cup. Only one seed was planted in the last cup to compare with the other pots. After 25 days, the height of the plants was measured to determine which plants grew best. what is the control of this experiment

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