An Update of Fischerʹs Lock-And-Key Theory of Enzyme Specificity View

question 75

Multiple Choice

An update of Fischerʹs lock-and-key theory of enzyme specificity view the as the lock and as the key.

• A) enzyme; substrate
• B) substrate; enzyme
• C) enzyme; transition state
• D) transition state; enzyme
• E) substrate; transition state

---

Definitions:

α-D-Glucopyranose

An alpha anomer of glucose in its cyclic form, where the hydroxyl group at the anomeric center is in the axial position.

Pyranose Forms

The six-membered oxygen-containing heterocyclic forms of monosaccharides or sugars.

Monosaccharide

The simplest form of carbohydrates, consisting of a single sugar molecule, such as glucose or fructose.

Cyclic Hemiacetals

Compounds formed from the reaction between an aldehyde and an alcohol under acidic conditions, resulting in a ring structure containing both an alcohol and an ether (or alkoxy) group.