A non-proteinaceous enzyme is
(1) lysozyme
(2) ribozyme
(3) ligase
(4) deoxyribonuclease
Which of the following describes the graph correctly?
(1) Endothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme
(2) Exothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme
(3) Endothermic reaction with energy A in the absence of enzyme and B in the presence of enzyme
(4) Exothermic reaction with energy A in the absence of enzyme and B in the presence of enzyme
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. Cholesterol Guanin
2. Amino acid NH2
3. Nucleotide Adenine
4. Nucleoside Uracil
Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched
with the category mentioned against it?
1. Thymine, Uracil - Pyrimidines
2. Uracil, Cytosine - Pyrimidines
3. Guanine, Adenine - Purines
4. Adenine, Thymine - Purines
An organic substance bound to an enzyme and essential for its activity is called:
1. coenzyme
2. holoenzyme
3. apoenzyme
4. isoenzyme
The inhibition of succinic dehydrogenase by malonate is an example of
1. competitive inhibition
2. non-competitive inhibition
3. allosteric modulation
4. none of the above
In a 50 gm living tissue, what would be the amount of water?
(1) 15-25 gm
(2) 25-30 gm
(3) 35-45 gm
(4) 70-90 gm
Which of the following elements is present in very less quantity in the body?
(1) K
(2) Ca
(3) Mg
(4) Cu
In a normal adult, ascending order of concentration of following molecules is
(1) K>Na>Fe>Cu
(2) Na>K>Cu>Fe
(3) Fe>Na>K>Cu
(4) Na>Fe>K>Cu
The quaternary structure of a protein:
(1) Consists of 4 subunits - hence the name quaternary
(2) Is unrelated to the function of the protein
(3) Both (a) and (b)
(4) Depends on the 1° structure of subunits