Answer: B. Polypeptides do not unfold and thus migrate at slower rates through the gel.
Explanation:
SDS-PAGE is a gel electrophoresis used to separate charged molecules by their molecular masses in an electric field. To do this, it uses SDS (sodium dodecyl sulfat) to isolate proteins.
SDS is an amphipathic surfactant which covers the intrinsic charge of the proteins. It denatures proteins by binding to the chain and coating the protein with surfactant molecules. So it disrupts the tertiary structure of proteins, and this brings the folded proteins down to <u>linear molecules which makes them have similar charge-to-mass ratios. </u>
<u>Proteins treated with SDS will have a negative charge</u>, and during the application of a constant electric field, the protein migrate towards the anode (positive charge), <u>each with a different speed according to the mass. </u>
Without SDS, proteins do not unfold and wont be uniformly negatively charged. This means migrate slower.
Burning fossil fuels emits a number of air pollutants that are harmful to both the environment and public health. Sulfur dioxide (SO2) emissions, primarily the result of burning coal, contribute to acid rain and the formation of harmful particulate matter.
The true statement should be B
the electron configuration for Phosphorous is 1s2 2s2 2p6 3s2 3p3
the diagram for 3p3 should be ^_ ^_ ^_ because you want to fill to put an electron in each slot before you double up
Answer:
pH= 12.7
Explanation:
a)Keep an emergency kit and fresh water in your car in the event of _an unexpected event.
b) pOH= -log[OH-]
pOH= -log[5.00×10^-2]
pOH= 1.3
But pH+pOH= 14
pH= 14-pOH= 14-1.3
pH= 12.7
Answer:
Manganese decreases from 4+ to 2+ (reduced and oxidizing agent) and nitrogen increases from 2+ to 5+ (oxidized and reducing agent).
Explanation:
Hello there!
In this case, according to the given redox reaction, we rewrite it as a convenient first step:
Next, we assign the oxidation numbers as follows:
Thus, we can see that both manganese and nitrogen undergo a change in their oxidation number, the former decreases from 4+ to 2+ (reduced and oxidizing agent) and the latter increases from 2+ to 5+ (oxidized and reducing agent).
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