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In SDS-PAGE, proteins are coated with a net negative charge…

In SDS-PAGE, proteins are coated with a net negative charge upon treatment with SDS.

Published November 30, 2024
Categorized as Uncategorized

You design primers and realize that they fold back on themse…

You design primers and realize that they fold back on themselves and form structures like the ones shown below. What will you do next?

Published November 30, 2024
Categorized as Uncategorized

Yamanaka discovered that reactivating 4 specific genes could…

Yamanaka discovered that reactivating 4 specific genes could convert an adult cell into pluripotent cells.  These transcription factors are:

Published November 30, 2024
Categorized as Uncategorized

At what temperature does the following step of PCR occur?  …

At what temperature does the following step of PCR occur?    

Published November 30, 2024
Categorized as Uncategorized

The following gel represents RNA extracted by four students…

The following gel represents RNA extracted by four students (1-4)  in a lab. Who was most successful in extracting RNA?

Published November 30, 2024
Categorized as Uncategorized

In an experiment, RNA was extracted from eukaryotic cells an…

In an experiment, RNA was extracted from eukaryotic cells and subjected to agarose gel electrophoresis.  What is the identity of bands shown by the  arrows, A and B, in the image?

Published November 30, 2024
Categorized as Uncategorized

In the picture below, the question mark indicates something…

In the picture below, the question mark indicates something that is required to convert a specialized skin cell into an pluripotent cell (iPS).  Which of the following can the question mark represent?

Published November 30, 2024
Categorized as Uncategorized

Shown below is the result of digesting pCMV with Not1 and Sm…

Shown below is the result of digesting pCMV with Not1 and Sma1 enzymes and resolving the products on a 1% agarose gel.  Does the plasmid map of pCMV shown below correlate with the results of digestion?

Published November 30, 2024
Categorized as Uncategorized

The following plasmid was inserted into a bacterial cell and…

The following plasmid was inserted into a bacterial cell and its presence was confirmed.  However, the plasmid failed to replicate inside the cell.  Which of the following answers could best explain the reason for this failure?  

Published November 30, 2024
Categorized as Uncategorized

A cell that has received the following plasmid could not sur…

A cell that has received the following plasmid could not survive in the presence of the antibiotic, Ampicillin.  What could be a possible explanation for this?

Published November 30, 2024
Categorized as Uncategorized

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