Answer:
Air Pressure
Explanation:
The weight of the air that pushes down on us is air pressure, and air pressure changes depending on where you are.
Provided that there's no diagram, most molecules have particular areas on the molecules, called the "active area" that act as a lock to a particular substrate's molecular structure, providing the key.
An enzyme's active area is only able to be "unlocked" by a certain substrate's "key".
The process is called denaturation.
I hope this helped :)
Answer:
Joint - a joint is where two bones articulate
In this case, the femur and tibia form a joint.
