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In at least single eukaryote, Tetrahymena, the pre-rRNA molecule holds an intron. Erasing of the intron in running processing of the pre-rRNA does not require the assistance of any protein! Instead, in the presence of guanosine, GDP, GMP or GTP, the intron excises itself is a phenomenon known as self- splicing. This was the first expression of ribozymes, which is, catalytic RNA molecules which catalyze particular reactions. The Self-splicing introns have also been discovered in some eukaryotic mRNAs and even peptidyl transferase a main activity in protein synthesis is now known to be a ribozyme.
Why it was necessary to develop regulations on the preparation and sale?
Explain Acute Infections Fever Acute Infections Fever: Acute fevers are of short duration with acute symptoms, the body temperature may rise to above 104°F. Examples of such i
What is Nagel's Anomaloscope The patient is asked to match a yellow with a mixture of red and green wave lengths. A defect can be detected based on the amount of red and green
What are the two main species of taenias that cause human diseases? The two major species of taenias that cause disease in humans are Taenia solium, or the pork tapeworm, and T
What are the noteworthy features of the nervous system of arthropods? In arthropods the nervous system has more complicated sensory receptors with well-advanced cephalization.
When coal is carbonized coke is formed along with coal gas. 1300 0 C Coal coke + coal gas
Q What is the name of the membrane with the intention of delimits the nucleus? To which component of the cell structure is that membrane contiguous? The nuclear membrane is als
Q. What is the endocrine function of the placenta? The placenta is not a permanent gland of the endocrine system other than this it also has endocrinal function. The placenta p
Agriculture - Degradation of Ecosystem Agriculture whether traditional or modern involves intervention and modification of the natural ecological systems. Ever since man has s
Arterial Blood Gas Studies: Purpose 1) A measurement of partial pressure of oxygen and carbon dioxide in arterial blood, as well as the pH of the blood. 2) The Partial p
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