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".
Answer:
A tight junction is a watertight seal between two adjacent animal cells, which prevents materials from leaking out of cells.
Explanation:
Water, Sunlight energy, and CO2(carbon dioxide)
Answer:B.
It was used to prove that smoking causes health problems.
Explanation:
