Which part of the cell membrane can catalyze chemical reactions

The correct answer is:  " enzymes " .

Note that "enzymes" are "biological catalysts" .

       "Catalysts" are agents that 'increase the rate of' , or 'speed up' , a 'chemical reaction' , when added to the reactants;  and by definition, catalysts do so within affecting the reaction itself.

       As aforementioned, "enzymes" can function as "biological catalysts" — which means that enzymes within the cell membrane can 'speed up' , or 'increase the rate of' , biological reactions (i.e. biochemical reactions) — without affecting the biological reaction (i.e. biochemical reaction) itself.

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Enzymes

Explanation:

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