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Define role of Leptin in controlling gene expression?
Leptin is a protein product (containing 167 amino acids) of the ob gene expressed exclusively in the adipose tissue. This protein molecule functions as an afferent signal in a negative feedback loop, centred in the hypothalamus, regulating the size of the adipose tissue mass.Leptin has been shown to modulate the synthesis of neuropeptides, particularly Neuropeptide Y (NPY) that regulates food intake. Increases energy expenditure as indicated by animal experiments. Leptin induced weight loss is completely specific for adipose tissue. While feeding does not appear to modulate leptin expression, fasting acutely decreases plasma leptin concentration. In general, obese humans have high leptin levels and the available data suggest that human obesity is likely to be associated with insensitivity to leptin.
How do the repairing enzymes of the genetic system act? There are enzymes within the cells that detect errors or alterations in DNA molecules and start a repair of those errors
XYY humans are fertile males. XXX humans are fertile females. What do these observations reveal about the mechanisms of sex determination and dosage compensation?
Collenchyma are one of the three major cell types in the plants; are elongated and have thicker walls than parenchyma cells and are usually arranged in strands; gives support and
A person has swelling on the front of his neck. Name the disease he is suffering from and the cause of it.
Explain the differance between savanna and desert? Savanna : Savanna is characterized by relatively low rainfall and pronounced dry seasons. This type of climate produces a b
Which is true of the resting membrane potential? A. It requires few ions to be distributed unevenly. B. It has the same value in all cells C. Only nerve and muscle cells h
Cutaneous larva migrans Cutaneous larva migrans, also known as creeping eruption, creeping verminous dermatitis or serpiginous eruption, is caused by larvae of many nematodes, viz
Describe the clinical significance and symptoms of edema. How does edema (in its different forms listed in your text) appear on medical imaging examinations? Discuss any specific c
Subphylum Mastigophora One or more flagella present in adult stages; autotrophic or heterotrophic nutrition; reproduction usually asexual by fission. Class - Phytomasti
Q. List the counselling skills? Slowly start winding up the contact with the client and the family by providing them support, motivating the client to take care of oneself with
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