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.
Hi this would be called the blind spot. Hope this helps.
Cell, the smallest unit that can exist independently
No,they kill all ages for ex.A pack of lions went hunting leaving their cubs behind and a pack of hyenas come and they are hungry they will eat the food that they can
