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Fill in the blanks with the best word or phrase selected from the list below. Use each phrase only once. Plasma membrane proteins are inserted into the membrane in the _____. The address information for protein sorting in a eukaryotic cell is contained in the____ of the proteins. Proteins enter the nucleus in their_form. Proteins that remain in the cytosol do not contain a____. Proteins are transported into the Golgi apparatus via____ The proteins transported into the endoplasmic reticulum by____are in their _____form. amino acid sequence Golgi apparatus sorting signal sequences endoplasmic reticulum plasma membrane transport vesicles folded/3 degree conformation protein trans locators unfolded With respect to, location of protein synthesis, position and nature of any signal sequence, nature of the protein during entry, and requirement for any other proteins for transport, compare and contrast the transport of proteins into the nucleus vs. the ER:

Explanation / Answer

Ans 1 : Plasma membrane proteins are inserted into the membrane in the Endoplasmic reticulum. The address information for protein sorting in aeucaryotic cell is contained in the amino acid sequence of the proteins.Proteins enter the nucleus in their folded/ 3o conformation form. Proteins that remain in the cytosol do not contain a sorting signal. Proteins are transported into the Golgi apparatus via transport vesicles. The proteins transported into the endoplasmic reticulum by protein translocators are in their unfolded form.

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