Definition: A globular protein that catalyses a biological chemical reaction.

Alright class, settle down, let’s take a look! That definition you read – “A globular protein that catalyses a biological chemical reaction” – it’s pretty key, you see. Let's break it down with some poetry for clarity! First, let's talk about 'enzyme'. Think of it like this: an enzyme is a helper, quite precise and quick, A protein star, working within, doing a biological trick! Now, “globular” – that means round and neat, Like a little ball, oh so complete. Proteins fold in shapes, you understand? An enzyme’s structure helps it lend a hand. Then comes "catalyses," the important part, It speeds up reactions with skillful art! Imagine a lock and key, a perfect fit, The enzyme grabs its target, quick and lit! And finally, “biological chemical reaction,” Means changes happening, a lively action. Like breaking down sugars for energy’s flow, Or building new molecules – watch them grow! So, to sum it up, an enzyme is a protein that speeds up reactions within living things. It's absolutely vital for life as we know! Do you have any questions about this little helper friend? Don’t hesitate to ask - let’s explore this further!