Pls help me I don’t have much time left I’ll give brainliest

You see a white marker with an orange circle and black lettering. what does this marker tell you

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.

Omg substrates with the same size and shape as the active site will bind to the enzyme. why is the key labeled the “bad” substrate?