Classify this enzyme

 

(Question E-15) The enzyme that catalyzes this type of reaction belongs to this class of enzymes:

 

a)     Class 1: Oxidoreductases

 

b)     Class 2: Transferases

 

c)      Class 3: Hydrolases

 

d)     Class 4: Lyases

 

e)     Class 5: Isomerases

 

f)       Class 6: Ligases

 

 

Some questions about coenzymes, the organic cofactors of enzymes

 

(E-12) FMN and FAD have in common that in both structures we can find:

 

a)     riboflavin

b)     adenosine

c)      AMP

d)     Ribose

e)     Adenine

 

(E-13) FMN, FAD, NAD⁺ and NADP⁺ are organic cofactors in reactions catalyzed by enzymes:

 

a)     oxidoreductases

b)     lyases

c)      ligases

d)     isomerases

e)     hydrolases

f)       transferases

 

(E-14) A compound present in NAD⁺ and NADP⁺ but not in FMN and FAD is:

 

a)     Niacin

b)     Riboflavin

c)      Adenin

d)     Ribose

e)     Phosphate

 

Q: About the regulation of the enzyme activity

 

(E-11) Which kind of process is represented in the diagram that appears below, considering that:

 

–          increasing the concentration of the Substrate S the activity of the enzyme increases.

 

–          The compound I is not related to the metabolic pathway in which this enzyme participates

 

–          Vmax is not affected by the compound I

 

–          Km increases as result of the presence of I

 

 

 

Options:

 

a)      allosteric activation

 

b)      allosteric inhibition

 

c)      competitive inhibition

 

d)     homotropic interaction

 

e)      heterotropic interaction

 

f)       irreversible inhibition

 

g)      feed back inhibition

 

h)      feed back activation

 

i)        non competitive inhibition