There is an enzyme explanation whose specificity states that an enzyme and its substrate possess specific complementary geometric shapes that fit exactly into one another. This is the lock and key explanation.Ê
As the substrate binds to the enzyme, the shape of the active site changes to accommodate the reaction.
The old theory was that it was like a key and lock, that was until they realized it wasn't so definite.
lock and key
Enzymes have an active site that is specific for a substrate - therefore enzymes only work when the right substrate is present. The surfaces of the enzyme and the substrate fit together - like a lock and key - allowing the enzyme to fulfil its function. The theory of "induced fit" is more widely accepted - it is similar, but the enzyme shape changes to accommodate the substrate.
The fluid mosaic model, of corse!
His theory was accepted because the premise was sound, the method of natural selection was convincing and the evidence for the theory was overwhelming.
The mesohyl, formerly known as mesenchyme, is a gelatinous matrix within a sponge. The mesohyl resembles a type of connective tissue and contains several amoeboid cells, fibrils, and skeletal elements. For hundred of years, it has been largely accepted that sponges lack true tissue, but it is currently debated as to whether mesohyl and pinacoderm layers are in fact tissues
No
A postulate or axiom is an accepted statement of fact.
Ummmmmm,,,,..
That which is considered and established as a principle; hence, sometimes, a rule., A statement of a principle to be demonstrated., To formulate into a theorem.
What kind of statement is accepted without further justification?
A logical argument in which each statement is backed up by a statement that is accepted as true is a proof.
A statement that is factually correct and does not mislead.
It is a repeated observation about nature.
Postulate
A Postulate
A statement accepted without proof is commonly known as a theorem. The other word that is used for such statements is postulate.
true
postulate