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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.
GROWT H CURVES - S-shaped or sigmoid - Described by Verhuhst in 1839. It shows 5 phases - (i) Lag phase (ii) Positive acceleration phase (iii) Exponent
Pocket Psedocyst : lesions present as endodontic origins from canals . It makes lumens resemble granuloma . All lesions lined until root canal or apical foramen communicat
Explain about the Foods Effect on Drug Utilization? The following illustrations highlight the effect of food on drug utilization. Liver and green leafy vegetables can decrea
Explain about the increases or decreases or shifts in demand terminology. Market into equilibrium P 1 Q 1 , here demand D 1 equals supply S 1 • When price reduce fromP 1
Why can the consumption of molecular oxygen indicate the metabolic rate of aerobic organisms? Molecular oxygen (O2) consumption has direct relation to the cell metabolic rate i
Structural Function - Essential Elements The elements nitrogen, phosphorus and sulphur absorbed from the soil are essential components of amino acids and nucleotides. The othe
How much of a 10% w/v of nacl can be made using 30g of nacl? Please show all steps.
Why do membranes figure so prominently in eukaryotic cells? What essential function do they serve?
Explain Biochemical investigation Biochemical investigations: These help to reveal nutrients and metabolites in blood and /or urine, and/or faeces that indicate an infectio
Pisciculture: This is the culturing of fishes. There is a principal form of aquaculture called Fish farming, while other methods can come under mariculture. Fish farming main aim i
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