BIO-111 Lab Exam #1

Front

What is gel electrophoresis?

Back

A laboratory technique used to separate DNA, RNA, or proteins based on their size and charge.

Front

How do DNA fragments behave in gel electrophoresis?

Back

Smaller DNA fragments move faster and travel farther in the gel compared to larger fragments.

Front

What type of pipette is used for precise measurement of small volumes?

Back

Micropipette.

Front

What happens to a hypothesis when it is consistently validated by independent investigators?

Back

It becomes a theory.

Front

In gel electrophoresis, where do the largest DNA fragments appear?

Back

Closest to the starting wells.

Front

What is the purpose of using a dichotomous key in biology?

Back

To identify organisms based on a series of choices that lead to the correct name.

Front

What is the difference between a scientific law and a theory?

Back

A scientific law describes a consistent observation, while a theory explains why those observations occur.

Front

What is the role of agarose gel in gel electrophoresis?

Back

Agarose gel acts as a medium through which DNA fragments can migrate during electrophoresis.

Front

What is the significance of the buffer solution in gel electrophoresis?

Back

The buffer maintains a stable pH and provides ions that conduct electricity.

Front

What is the function of a loading dye in gel electrophoresis?

Back

Loading dye helps visualize the sample and allows for tracking the progress of the electrophoresis.