Which statement about enzymes is true?
An enzyme functions to increase the activation energy in a reacton.
Enzymes are proteins that function as catalysts in nonliving things.
Each enzyme can catalyze many different biochemical reactions.
Enzymes and substrates fit together like a lock and key.

Enzymes and substrates fit together like a lock and key.

Explanation: Enzymes are made of protein which is used as a catalyst. Function of catalyst is to speed up the chemical reaction. Enzyme decrease the activation energy so that the chemical reaction takes place. Enzyme only speed up those reactions which occurs in living organisms. Enzyme act on substrate like key and lock. Once the chemical reaction speed up, it detached itself from the substrate.

Which statement about enzymes is true?

Each enzyme can catalyze many different biochemical reactions

Explanation:

enzymes are proteins that catalyzes a chemical reaction

i think that d. wind is the answer.   i missed the question when i answered a. currents.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .