Question

A group of biology students tests the growth of bacteria under different conditions. The students apply the same amount of bacteria to identical Petri dishes enriched with nutrients, then place each plate at a different temperature. The bacteria are allowed to grow for three days, after which the number of bacterial colonies on each plate is counted. What is the dependent variable in this experiment?

Answer 1

In the above experiment, the number of bacterial colonies after three days is a dependent variable. Option A is the right answer.
The variables in the experiment that are reliant on the cause independent variables are referred to as dependent variables.
For instance, consider the amount of bacterial colonies after three days.
The variables in the experiment that can be modified or manipulated are known as independent variables.
For example, temperature, nutrient content, and so forth.
As a result, in the provided experiment, the number of bacterial colonies after three days is a dependent variable.