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The nucleus has an inner and an outer membrane and is perforated through 3000-4000 nuclear pores. Each pore having of a nuclear pore complex of more than 100 several proteins organized in a hexagonal array. Whereas little molecules can pass by the pore by free diffusion and large proteins entering the nucleus need a nuclear localization signal. That is four to eight amino acids long and is rich in the positively charged amino acids arginine and lysine as well as commonly having proline, and is situated internally within the polypeptide chain. The protein is taken by the pore in an ATP- requires step and enters the nucleus without cleavage of the localization signal.
Figure: Uptake of proteins into the mitochondrial matrix
Explain Metabolic Response to Injury? There is an increase in the basal metabolic rate above the normal. The degree of hyper metabolism is related to the severity of the injury
Role of citrate Citrate in addition to being an intermediate of citric acid cycle provides a source of acetyl CoA for the cytosolic synthesis of fatty acids. Citrate inhi
Prostaglandins and the structurally associated molecules prostacyclins, leukotrienes and thromboxanes, are called as eicosanoids because they having 20 carbon atoms. These hormones
Why methyl alcohol is used in destarching?
information on climbing beans
What is Radioactivity ? Radioactivity : Some isotopes, called radioisotopes, have unstable nuclei that release high energy particles or radiant energy, or both. An example
To prevent and control Staphylococcal food poisoning: • Avoid contamination of foods • Kill organism by heating, refrigeration • Personnel hygiene • Adequate cookin
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What are cell kind that form the xylem? What are the major features of those cells? The major cells of the xylem are the tracheids and the vessel elements (these only in angios
Thermodynamics and Cell Shapes Why are protoplasts (cells devoid of cell wall) spherical? Why are most of the unicellular organisms (prokaryotes and eukaryotes) spherical? A s
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