Answer: The lock-and-key mechanism is usually associated with the complementary shapes of an enzyme with a single substrate wherein the lock that is being referred to is the enzyme and the substrate is the key. One right sized substrate (key) fits into the active site (key hole) of the enzyme (lock).
Any place where there are living organisms
The oldest layers are on the bottom thats why they are the oldest. Super position is what it is called if thats what your asking.
Answer:
I feel that the correct answer is A
Explanation:
Hope this was helpful!!!!
Answer:
pseudostratified
Explanation:
The epithelium of the nasal cavity, nasopharynx, trachea and bronchi is ciliated pseudostrtisfied columnar epithelium, often with goblet cells
