Question

from the anthocyanin and beets experiment, match each variable with its appropriate part of the experiment: independent variable choose absorbance units different sized beet pieces color of test tubes temperature same size tubes used different sized tubes used dependent variable a standardized variable

Explanation:

The independent variable is what is changed or manipulated in an experiment. Here, factors like temperature or size of beet pieces can be manipulated, and among the options, temperature is a common independent variable in such experiments. The dependent variable is what is measured, and absorbance units are often measured in experiments related to anthocyanin levels. A standardized variable is kept constant to ensure valid results, and using the same - size tubes is a way to standardize the experiment.

Answer:

independent variable: temperature
dependent variable: absorbance units
a standardized variable: same size tubes used