The retina which contains all the light sensing cells called rods and cones, is attached in only one place on the back of the eye where is that?

i am new girl here follow me

it would be c. xylem.

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