Question

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?

A.
The amount of folic acid and DNA synthesized are both dependent variables.
B.
The amount of folic acid and DNA synthesized are both independent variables.
C.
The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
D.
The amount of folic acid is the dependent variable, and the DNA synthesized is the independent variable.
E.
The amount of folic acid and DNA synthesized are neither dependent nor independent variables.

Answer 1

The answer is C)The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.

Answer 2

C.

The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.

Step-by-step explanation:

Since the aim of the study is to know the effect of folic acid on the process of DNA synthesis, the experimental system should be given a different amount of folic acid. Respective change in DNA synthesis would represent the effect of the amount of folic acid on the process. Therefore, the amount of folic acid is the independent variable which would affect the dependent variable, that is, the DNA synthesized.