What is global warming a. a recent increase in the

nucleus

would be most reasonable answer tbh

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.