Biology question bonding

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i saw this question but is this much detail included in the exam? i never heard the charges in books before


the (+) and (-) “cancel out” cause they’re zwitterions leaving Glycine and Alanine neutral
Lysine is positively charged:
(-) (+) (+) ---- (+) overall
Aspartate is negatively charged overall

i think this might not be expected of us to know, hope this helps!