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The perfect encapsulation of scientific personalities in the wild! While the first three panels show typical teenage rebellion stereotypes, the final panel goes full science nerd with hemoglobin's humble brag about its oxygen-carrying capabilities.
That last panel is basically every biochemistry student who finally understands protein function and can't stop talking about it at parties. Hemoglobin is literally the protein equivalent of that friend who's like "my only personality trait is carrying groceries in one trip" except it's oxygen molecules through your bloodstream.
The molecular structure shown is indeed hemoglobin - a complex protein with four subunits that binds to oxygen in your lungs and delivers it throughout your body. Without it, your cells would be gasping like a PhD student after their thesis defense.
