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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.
What is the nucleolus? The nucleolus is a small and optically dense region in the interior of the cell nucleus. It is made of ribosomic RNA (rRNA) and proteins. Single nucleus
what is a scientific name of mango?
AMITOSIS This is direct cell division in which the genetic material is not duplicated and hence its distribution to the daughter cells is not precisely half and half,
Q. How do the potassium and sodium ions maintain the resting potential of the neuron? The plasma membrane of the neuron when at rest maintains an electric potential difference
Anaplerotic Reactions Anaplerotic reactions are reactions that replenish the intermediates of citric acid cycle. The special enzymatic mechanisms by which the pool
What is the morality of a 1.5% NaCl solution?
What is Phylum Nematoda - Roundworms? Nematodes are commonly known as the roundworms. They have a pseudocoelom type of body cavity, and they have a digestive tract that opens t
Q. How can the presence, function of muscular tissue and localization in beings of the phylum Annelida is explained? In these beings there are a longitudinal muscular layer und
Distribution of Stomata There are two parameters normally used for expressing the distribution of stomata. Stomatal frequency: The number of stomata per unit area
Fate of Blastopore Cleavage results in the formation of a ball of cells called morula (resembling mulberry hence the name). A space appears in the morula changing it to a holl
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