Question

select the correct answer.

dna is the genetic material that makes up living things, and folic acid plays an important role in the formation of dna. jon wants to study the effect of folic acid on dna formation in microbes. which statement accurately describe the variables in this study?

• the amount of folic acid and dna synthesized are both dependent variables.
• the amount of folic acid and dna synthesized are both independent variables.
• the amount of folic acid is the independent variable, and the dna synthesized is the dependent variable.
• the amount of folic acid is the dependent variable, and the dna synthesized is the independent variable.
• the amount of folic acid and dna synthesized are neither dependent nor independent variables.

Explanation:

Identificar la causa y el efecto

Para comprender las variables, aplicamos el Scientific Method. Jon quiere estudiar el efecto del ácido fólico (causa) en la formación de ADN (efecto).

Definir la variable independiente

La variable independiente es el factor que el investigador manipula o cambia deliberadamente. En este estudio, Jon controla la cantidad de ácido fólico administrada a los microbios.

Definir la variable dependiente

La variable dependiente es el factor que se mide u observa para ver cómo responde a los cambios. Aquí, la cantidad de ADN sintetizado depende de la cantidad de ácido fólico.

Evaluar las opciones dadas

La opción correcta debe identificar el ácido fólico como la variable independiente y el ADN sintetizado como la variable dependiente.

Answer:

• The amount of folic acid and DNA synthesized are both dependent variables.
• The amount of folic acid and DNA synthesized are both independent variables.
• The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable. (Correct answer)
• The amount of folic acid is the dependent variable, and the DNA synthesized is the independent variable.
• The amount of folic acid and DNA synthesized are neither dependent nor independent variables.