A protein molecule which is denatured, has :
Split into smaller molecules
Changed its shape
Combined with another molecule
Been diluted
Molecular size of the enzyme
The pH optimum value
The Km value
Formation of the product
The graph shows the rate of an enzyme reaction at different levels of acidity or alkalinity (pH). From the graph, what is the optimum pH for this enzyme?
pH 2
pH 7
pH 10
pH 8
Which one of the following statement is NOT true?
Some inorganic elements are considered to be "essential" nutrients.
Triglycerides are considered to be "simple" lipids.
Virtually every reaction in a living cell requires an enzyme.
Only 10 "essential" amino acids are used in the synthesis of proteins.
The largest biomolecule in a living cell.
Glycogen
Protein
Cholesterol
Deoxyribonucleic acid
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
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
Carbohydrate
Lipid
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
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.
