15859.Enzymes that catalyse inter-conversion of optical, geometrical or positional isomers are
Ligases
Lyases
Hydrolases
Isomerases
15860.The polypeptide or protein part of the enzyme is called
Apoenzyme
Holoenzyme
Prosthetic group
Zymogen
15861.Turn over number of an enzyme is dependent upon
Size of enzyme
Molecular weight of enzyme
Active sites
Concentration of substrate
15862.Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues.
Identify the category shown and the one blank component "X" in it
| Category | Component |
|---|---|
| (1) Nucleotide | Adenine |
| (2) Nucleoside | Uracil |
| (3) Cholesterol | Guanin |
| (4) Amino acid | NH2 |
Option (1)
Option (2)
Option (3)
Option (4)
15863.Given below are two statements A and B. Choose the correct answer related to the statements.
Statement A - Amino acids are amphoteric in their function.
Statement B - All amino acids are necessary for our body.
Statement A - Amino acids are amphoteric in their function.
Statement B - All amino acids are necessary for our body.
Statement A is wrong, statement B is correct
Both the statements A and B are wrong
Statement A is correct, statement B is wrong
Both the statements A and B are correct
15865.Which one of the following pairs is wrongly matched?
Textile - amylase
Detergents - lipase
Alcohol - nitrogenase
Fruit juice - pectinase
15866.Which one of the following statements is true with reference to enzymes?
Apoenzyme = Holoenzyme + Coenzyme
Holoenzyme = Apoenzyme + Coenzyme
Coenzyme = Apoenzyme + Holoenzyme
Holoenzyme = Coenzyme – Apoenzyme
15867.Which one of the following is wrong statement?
Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
Nitrosomonas and Nitrobacter are chemoautotrophs
Anabaena and Nostoc are capable of fixing nitrogen in free-living state also
Root nodule forming nitrogen fixers live as aerobes under free-living conditions
15868.The given graph shows the effect of substrate concentration on the rate of reaction of the enzyme green gram-phosphatase. What does the graph indicate?
The rate of enzyme reaction is directly proportional to the substrate concentration
Presence of an enzyme inhibitor in the reaction mixture
Formation of an enzyme-substrate complex
At higher substrate concentration the pH increases