Sam shared with his class that he lives on oak street. sam is likely how old?

Is there any more information to this question?

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.

Ithink the answer is nuclear membrane