Scientists can identify cells by categorizing the different features of a cell by noting down the shape, color, and other physical features. This aspect of science is known as Observation Inference Hypothesis Controlled Experiment

Observation

Explanation:

The aspect of science that has to do with the recording of color, shape, and other physical features in order to identify a cell would be observation.

Observation in science is the collection of data via perception or through the use of scientific instruments. Perception generally involves the use of human senses such as sight, touch, taste, and hearing to collect data in order to arrive at a conclusion.

The color, shape, and other physical features of a cell requires a perception of sight. Hence, it involves observation.

the denominator has a very specific role.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: