Of the following anatomical structures, which is homologous to the bones in the wing of a bird? A) skin in the ears of a kangaroo
B) chitinous struts in the wing of a butterfly
C) bony rays in the tail fin of a flying fish
D) bones in the flipper of a whale

dz nuts.   eeneneneeenenne

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