With regards to the insulin signaling cascade, which of the following is false?     binding of glucose to the insulin receptor triggers phosphorylation of the insulin receptor under normal condition     2

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With regards to the insulin signaling cascade, which of the following is false?

 

	binding of glucose to the insulin receptor triggers phosphorylation of the insulin receptor under normal condition
	2.  insulin receptor substrates 1 and 2 (IRS 1 and 2) undergo tyrosine phosphorylation to propagate the insulin signal
	3. phosphorylation of Akt precedes the translocation of GLUT-4 to the plasma membrane
	4. GLUT-4 facilitates the transport of glucose into the cell, thus lowering blood glucose levels
	5. none of the above