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Which of the following BEST represents the relationship of polypeptide units

evan888

wrote...

10 years ago

Which of the following BEST represents the relationship of polypeptide units in MHC class II?

A.   alpha and beta chains from any gene can pair with each other.
B.   Only alpha and beta chains from the same gene can pair with each other.
C.   Only alpha and beta chains of the same allele can pair with each other.
D.   alpha chains can pair with other alpha chains, but beta chains can only pair with alpha chains.
E.   alpha and beta chains pair until the complex is exported to the cell surface and can bind beta-2 microglobulin.

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padre

wrote...

Staff Member

Educator

10 years ago

HI Evan

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Mastering in Nutritional Biology
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evan888 Author

wrote...

10 years ago

Thank you, this diagram is more clear and straight forward than the one I was looking at.

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padre

wrote...

Staff Member

Educator

10 years ago

Remember

Beta 1 Alpha 1
Beta 2 Alpha 2
---------------------- Leftwards Arrow

Cell

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Mastering in Nutritional Biology
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Lizie Author

wrote...

10 years ago

I am still somewhat confused as to how that diagram helps answer the question. I understand that the alpha and beta peptide units pair together but it doesn't explain when this happens or if it of the same or different alleles.

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