"what term describes the continuation of a visual sensation after removal of the stimulus

The correct answer is afterimage.

Explanation:

A visual illusion known as afterimage is a phenomenon in which persistence of retinal impressions takes place even after withdrawing the stimulus. It is considered to be a result of the continuous stimulation of the visual system. The afterimage can be negative or positive. A general example of an afterimage is the spot of light one witnesses after firing of the camera flash.

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

the answer is c.mitochondria. glad to .