Asense organ is made up of and other cells that gather information

The correct answer for the blank is -

Sensory neuron.

Explanation:

Sense organs can be described as organs or parts of the body that are sensitive to or responds to any change in the environment (external stimuli such as light, heat, chemical, vibration etc ) and convey messages in the form of nerve impulses to the central nervous system through sensory neurons.

Thus, they are made up of sensory neurons and other cells that help in gathering information, which is then passed to the CNS.

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