Biochemistry Final Exam

The enzyme urease enhances the rate of urea hydrolysis at pH 8.0 and 20 Celcius degree by a factor of 10¹⁴. If a given quantity of urease can completely hydrolyze a given quantity of urea in 5.0 min at 20 Celcius and pH 8.0, how long would it take for this amount of urea to be hydrolyzed under the same conditions in the absence of urease? Assume that both reactions take place in sterile systems so that bacteria cannot attack the urea.

These are some cofactors

• Mg2+

• Coenzyme A

• Mn2+

• Biocytin

• Fe2+

These are some coenzymes

• Mg2+

• Coenzyme A

• Mn2+

• Biocytin

• Fe2+

This is the function of oxidoreductase

• Transfer of electrons

• Group transfer reaction

• Hydrolisis reaction

• Formation of bonds

• Addition of groups

Explain the mechanism of enzyme on enhancing the rate of reaction

These are the characteristics of carbohydrate

• žthe most abundant biomolecules on Earth

• dietary staple in most parts of the world

• central energy-yielding

• structural and protective elements in the cell walls of animal

• lubricate skeletal joints and participate in recognition and adhesion between cells

These are the structures of

• aldoses

• ketoses

These are the structures of

• aldoses

• ketoses

These are monosaccharides

• Glucose

• Fructose

• Galactose

• Maltose

• Lactose

These are disaccharides

• Maltose

• Lactose

• Sucrose

• Glucose

• Galactose