Tag: CELL SIGNALING

57 Two steroid hormone receptors and Y both contain a ligand binding domain recombinant DNA technology, a modified hybrid receptor H is prepared such that it contains the ligand binding […]

55. Receptors for signaling for steroid hormones are located at (1) Plasma membrane (2) organelle membrane (3) Intracellular (4) No receptor   Introduction Steroid hormones regulate crucial physiological processes by […]

54. Which of the following statement is INCORRECT inrelation to treatment of pre-B cell with phorbol ester? (i) Phorbol esters activates NF-kB for translocation into nucleus (2) Phorbol esters activate […]

53. NF-kB is a transcription factor that plays a pivotal role inimmune response and inflammatory response. In itsresting state, NF-kB is rendered inactive in the cytosolby bound with lKB. When […]

52. Interferon α, β and γare cytokines produced and secreted by animal cells after infection by viruses. which of the following statements about interferons is INCORRECT? (1) When mammalian cells […]

51. Receptor for which one of the following proteins spans the plasma membrane of target cells but DOES NOT contain intrinsic protein kinase activity? (1) Epidermal growth factor (2) Insulin […]

50. Proteins with cytoplasmic domains having tyrosine kinase activity do NOT act as receptors for (1) Epidermal growth factor (EGF) (2) Platelet-derived growth factor (PDGF) (3) Insulin (4) Transferrin Introduction […]

49. Epidermal growth factor (EGF) is needed for growth of almost all cells. EGF receptor is a transmembrane protein having an extracellular ligand-binding domain, a transmembrane domain and a cytosolic […]

48. Receptor tyrosine kinases (RTKS) form a large and important class of cell surface receptors whose ligands are soluble or membrane bound protein or peptide hormones. Which of the following […]