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BIO---CHEMIST---THE-PHARMACEUTICAL-CORPORATION---IM---KERALA-LTD Related Question Answers
1. Which of the following is true ?
Canada cup Hockey American cup Football U-Thant cup-Cricket Ryder Tennis
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2. Which of the following intermediates of TCA cycle cannot be utilized for gluconeogenesis ?
Succinate Malate a - Keto glutarate Acetyle CoA
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3. Which statement best explains the function of the nuclear pore complex ?
It organizes DNA into at least five different levels of packing It determines which genes each cell will express It defines the regions of chromosomes that are replicated first during cell division It determines which proteins pass into and out of the nucleus
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4. The function of cAMP in a cell is :
To activate a G protein To remove phosphate groups from ATP To activate kinases To bind to the first messenger
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6. If a protein contains a primary binding site and an allosteric site, what else can you predict about this protein ?
Occupancy of the allosteric site alters the binding affinity of the primary site The primary binding site has a higher concentration of hydrophobic amino acids than the allosteric site The protein has quaternary structure The primary binding site and allosteric site form a domain
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7. Which of the following substance may not be useful in stabilizing enzyme solution ?
Proteins Bile salts Kucleic acids Amino acids
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8. Which of the following best defines immunotoxins ?
Toxic substances released by macrophages Cytokines Toxins coupled to antigen-specific immunoglobulins Toxins released by cytotoxic T cells
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9. FSI1 secretion begins to rise and new follicles begin to grow during :
the premenstrual phase The menstrual phase The preovulary phase The luteal phase
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10. Construction of a restriction map of DNA requires all of the following except:
Complete hydrolysis of DNA Partial hydrolysis of DNA Cyclic heating and cooling of the reaction mixture Klectrophorutic separation of fragments on a gel
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11. Onetheory of senescence is that it results from a lifetime of damageby :
Teratogens Aneuploidy Free radicals Cytomegalovirus
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12. Hie function of endonucleases during eukaryotic transcription termination is :
To expose the TATA sequences in the primary transcript To expose the polyadenylation site on the primary transcript To form a hairpin loop structure in the primary transcript To cut the primary transcript RNA away from the RNA polymerase
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13. All the following are constituents of ganglioside molecules except:
Glycerol Sialic acid Sphigosine Long chain fatty acid
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15. One of them is a scientist involved in studies on vitamin D action :
Antony Norman Antony Means Antony Quinn Mark Antony
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16. Which of the following statements explains the use of fluorochromes in immunophenotyping by clinical flow cytometry ?
Fluorochromes bind non-specifically to leukocytes All fluorochromes emit light at the same wavelength Several fluorochromes can be excited by light of a single wavelength The wavelength of the emitted light is the same as that of the incident light
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17. What do flippases and floppases do ?
Synthesize phospholipids on both faces of a membrane Move phospholipids from one face of a membrane to the other Move proteins from one face of a membrane to another Change the shape of phospholipids from one stable conformation to another
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18. Digestive enzymes are released by pancreas and bile is released by the liver in response to the hormone :
Gastrin Zymogen Cholecystokinin Insulin
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19. Membrane carriers icsembles enzymes except for the fact that carriers :
Are not protein Do not have binding sites Do not chemically change their ligands Change confirmation when they bind a ligand
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20. Gibberellins stimulate:
Oil division Growth of lateral roots Curvature of coleoptiles Elongation of intemode
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21. Galactosemia is due to deficiency of ;
Galactose-1-phosphate UDP transferase Galaclokinase Galactose-4-epimerase All the above
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23. When the fluid outside a cell has a greater concentration of a given molecule than the fluid inside the cell, the external fluid is :
Isotonic Hypertonic Hypotonic Ultratonic
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24. eRFl is release factor in eukaryotes that require :
ATP for its binding to ribosome GTP for its binding to ribosome ATP and G TP for its binding to ribosome Mn2+ for its binding to ribosome
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25. A molecule of CO-> is captured by biotin when it acts as coenzyme for carboxylation reaction. The carboxyl group is covalently attached to :
A nitrogen (N-j) of the biotin molecule Sulphur of thiophene ring cv-Amino group of lysine u-Amino group of protein
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