Read This! When designing an experiment, you need to consider three types of variables. The independent variable is changed by the experimenter in the design of the experiment. This variable is sometimes called the
"manipulated variable." The dependent variable is what changes as a result of the change in the inde-
pendent variable. This variable is sometimes called the responding variable." In some cases more than
one dependent variable is considered. The third category of variables is controlled variables. These are variables that you think may change the outcome of the experiment, but since they are not being studied,
they need to be kept constant in each trial.

(QUESTION)
9. Identify the independent, dependent, and controlled variables for the experiment that produced
the data in Model 3

Independent:

Dependent:

Controlled:

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