NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Most enzymes end with the suffix ____
A
-ase
B
-ose
C
-ide
D
-cyte
Explanation: 

Detailed explanation-1: -The suffix-ese is usually at the end of the enzymes names.

Detailed explanation-2: -Enzymes are commonly named by adding a suffix “-ase” to the root name of the substrate molecule they will naturally be acting upon. For example, Lipase catalyzes the hydrolysis of lipids, they break down the molecule with the help of water; Sucrase catalyzes the hydrolysis of sucrose into glucose and fructose.

Detailed explanation-3: -Enzymes are large protein molecules that function as biological catalysts. Note: Enzyme names end in –ase and are often named after the substrate.

Detailed explanation-4: -Most enzymes are proteins, but some catalytic RNA molecules have been discovered, so there are RNA molecules that will catalyze reactions and help speed them up in the same way that these proteins will, so they both work as enzymes.

Detailed explanation-5: -Enzymes are usually named after the reaction they catalyze and their name often ends with the suffix-ase. (See Tortora page 105, Table 5.1 for a list of enzyme types.) In these enzymes the binding site is not active until a cofactor binds to it. Cofactors are non-protein atoms or molecules which bind to the apoenzyme.

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