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Signal transduction occurs when an extracellular signaling molecule activates a cell surface receptor. In words, this receptor change intracellular molecules changes a response. There are two levels in this procedure: the signaling molecule activates a particular receptor protein on the cell membrane. A 2nd messenger transfers the signal into the cell and eliciting a physiological response. In either level the signal can be amplified. Whereas, one signalling molecule can cause several responses. Gene activations and metabolism alterations are instances of cellular responses to extracellular stimulation which requires signal transduction.
Q. Do enzymes act better under basic or acid pH? Most enzymes act in pH between 6 and 8, a range that corresponds to the general acidic level of blood and cells. There are enzy
A cDNA library is made by using the reverse transcriptase of a retrovirus to synthesize cDNA (complementary DNA) copies of the total mRNA from a cell (or perhaps a subfraction
Q. What kind of exoskeleton do some molluscs present? Some molluscs, like gastropods and bivalves secrete an external calcareous carapace (the shell). Calcium carbonate is a fo
Which term is used to describe organisms that live on or in the bottom of an ocean or lake. Such organisms can be found anywhere from the shoreline to greatest ocean depths? a)
Stabilized forms of natural colourants The mimicking of the native environment in which a natural colour exists is just one way of producing a stabilized form. In this case, th
Explain Fosamprenavir calcium It is a prodrug of amprenavir, was recently approved by the FDA for use in HAART. In patients who have not lastly been treated with a protease inh
Q. Dietary Recommendations during Diarrhoea? The diet should take into account the normal RDI and various adjustments made to the quantity and quality of the foods to be given.
FORMATION OF EGG MEMBRANE Ovum with egg membrane is called ova / egg. On the basis of origin the egg membrane are of three types & 1 . PRIMARY EGG MEMBRANE It is
Q. Do plants present only sexual reproduction? There are asexual forms of reproduction in plants few naturally detached pieces of root, leaves or limbs develop into another com
Q. Generally where is the sporophyte positioned in relation to the gametophyte in bryophytes? How does the sporophyte obtain nutrients? The bryophyte sporophyte generally is a
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