PAGE Gel Electrophoresis

Front

What is PAGE in the context of electrophoresis?

Back

PAGE stands for Polyacrylamide Gel Electrophoresis, a technique used to separate proteins based on their size.

Front

How does increasing the concentration of the gel affect protein migration speed in PAGE?

Back

Increasing the concentration of the gel decreases the migration speed of proteins.

Front

What unit is commonly used to express protein molecular weight?

Back

Kilodalton (kDa) is the unit used for protein molecular weight.

Front

What is the role of the loading buffer in PAGE electrophoresis?

Back

The loading buffer provides color and density to the sample, allowing for easier loading into the wells.

Front

What must be done to protein samples before loading them into the wells in PAGE?

Back

Protein samples need to be denatured in a water bath before loading.

Front

What is the function of SDS buffer in vertical electrophoresis?

Back

SDS buffer denatures proteins, ensuring they are linearized for separation.

Front

What is the purpose of using a gel in electrophoresis?

Back

The gel acts as a molecular sieve, allowing smaller proteins to migrate faster than larger ones.

Front

What factors can affect the resolution of protein separation in PAGE?

Back

Factors include gel concentration, voltage applied, and the size of the proteins being separated.

Front

Why is it important to denature proteins before PAGE?

Back

Denaturing proteins ensures they are in a linear form, which allows for accurate size-based separation.

Front

What is the significance of the molecular weight marker in PAGE?

Back

The molecular weight marker serves as a reference to determine the size of the separated proteins.