Because proteins are basically building blocks which mean that they only fit to specific pieces.
I suppose you mean to ask why we can't go through obstacles.
Any atom is surrounded by an electronic cloud. When two atoms get close to each other, the electronic clouds repel each other, preventing them from interpenetrating each other. That same phenomenon, on a larger scale, prevents us from going through matter.
Answer:
The Bronsted-Lowery acid is H2O
The Bronsted-Lowery base is CO3
The conjugate acid is HCO3
The conjugate base is OH
Explanation:
Molocules that lose a hydrogen in a reaction act as an acid, and those that recieve one act as a base.
Answer:
proportional. having a constant ratio. Second law: A body of mass m subject to a net force F undergoes an acceleration a that has the same direction as the force and a magnitude that is directly proportional to the force and inversely proportional to the mass, i.e., unbalanced.
Explanation:
hope it's help