B bc the amount would regulate
Function of an enzyme is to lower reaction's activation energy and to increase speed of a reaction, but to make it happen, enzyme and substrate must fit spatially. The shape of an enzyme is essential to make enzyme-substrate complex - if active site of an enzyme doesn't fit to substrate, there won't be a enzyme-catalised reaction.
When they compare they can see the difference and similarities to get to the end result
C The rods will attract each other because they are both positively charged.
