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Modulation of the transcription of cell cycle proteins?
The 1,25-(OH),D compound (calcitriol), is present in the blood complexes to the vitamin D-binding protein, a specific a-globulin. Calcitriol is believed to act on target cells in a similar way to a steroid hormone. Free hormone crosses the plasma membrane and interacts with a specific nuclear receptor known as the vitamin D receptor, a DNA-binding, zinc-finger protein with a relative molecular mass of 55,000. This ligand-receptor complex binds to a specific vitamin D-responsive element and, with associated transcription factors (e.g. retinoid X receptor), enhances transcription of mRNAs which code for calcium-transporting proteins, bone matrix proteins, or cell cycle-regulating proteins.
When air humidity is high does the plant transpiration increase or lower? When air humidity is high transpiration diminishes. As transpiration is a simple diffusion process it
Define Energy needs during pregnancy Period? Two factors determine energy requirements: increase in mother's basal metabolism to support the work required for foetal growth and
Define briefly about the Selenium? The element selenium was discovered in 1817 in association with the element sulphur. However, selenium as an essential nutrient remained unre
What is phellogen? What is its function? Phellogen, also called as cork cambium, is the meristematic plant tissue responsible for the formation of the periderm (the covering of
Q. Illustrate about Components of an Angioplasty System? 1) Guiding catheter: The ideal guiding catheter must have a lumen diameter i.e. at least twice that of the diagnostic c
Where are the openings into the coronary arteries? Why is this important when blood is flowing?
Of which substance do elastic fibers of the connective tissue are made? What are some functions of these fibers? The elastic fibers are made of a protein called elastin. Ela
Q. What are introns, and how do they affect the processing of genetic information? Introns, a feature of eukaryotic DNA, are intervening stretches of DNA lying between the exon
Determine about benefits of Jogging Jogging gives a sense of wellness to a diabetic patient. The frequency of jogging should be at least 3 days in week with a distance of 2 km
Classification of Aquatic Organisms After discussing the common types of the aquatic ecosystem let us now study in brief the ecological classification of aquatic organisms. I
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