Respuesta :
Membrane proteins mediate processes that are fundamental for the flourishing of biological cells. Membrane-embedded transporters move ions and larger solutes across membranes, receptors mediate communication between the cell and its environment and membrane-embedded enzymes catalyze chemical reactions.
Both peripheral and integral membrane proteins exist. A covalent anchor or a loose attachment via electrostatic or van der Waals interactions with the lipid head-groups or other membrane proteins is how peripheral membrane proteins are connected to the membrane. Membrane proteins that are integral span the membrane. Enzymes play a crucial role in reducing a reaction's activation energy, or the amount of energy required for the reaction to start. Enzymes function by attaching to reactant molecules and holding them so that chemical bond-forming and bond-breaking reactions proceed more quickly.
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