Question

a spectrophotometer measures ____________ and indicates enzymatic activity in this lab. conductivity electron activity absorbance length

Explanation:

A spectrophotometer is a device used in scientific experiments (such as in biology - related enzyme - activity labs). It works based on the principle of measuring how much light of a particular wavelength is absorbed by a sample. Conductivity is measured by a conductivity meter, electron activity is not a standard measurement for a spectrophotometer in this context, and length is measured by tools like rulers. Absorbance is the key measurement as it can be related to the concentration of substances (which in turn can indicate enzymatic activity as enzymes can affect the formation or breakdown of substances that absorb light).

Answer:

C. absorbance