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The activation of Insulin by posttranslational modifications…

The activation of Insulin by posttranslational modifications proceeds through certain distinct steps. Choose the correct statements and bring the steps into the correct order from beginning to last! Not all statements are needed, you have to read carefully! A) The N-terminal “end segment” is removed by the specific cleavage action of proteases B) This yields the molecule “insulin”. Insulin is made of three polypeptide chains stabilized by four disulfide bonds C) This yields the molecule “insulin”. Insulin is made of two polypeptide chains stabilized by three disulfide bonds D) Insulin is initially translated as a precursor of preproinsulin E) The C-terminal “end segment” is removed by the specific cleavage action of proteases F) The “central segment” is removed by the specific cleavage action of proteases G) The thiol groups of the six cysteine residues in preproinsulin oxidize to form three specific disulfide bonds H) The thiol groups of the eight cysteine residues in preproinsulin oxidize to form four specific disulfide bonds I) This yields the molecule “proinsulin”  

Neurotransmission is the process by which signaling molecule…

Neurotransmission is the process by which signaling molecules called neurotransmitters are released by the sending neuron and bind to the receptors on the dendrites of the receiving neuron. This process occurs in the synapse over a short distance. Neurotransmission is an example of _____________________ cell signaling.