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stop in Biological Definition

Genetic code

... codon table 4 Technical details 4.1 stop Codons 4.2 Degeneracy of the genetic code ... Tyrosine UAC (Tyr/Y) Tyrosine UAA Ochre ( stop ) UAG Amber ( stop ) UGU (Cys/C) Cysteine UGC (Cys/C) ...

Genetic code

... codon table 4 Technical details 4.1 stop Codons 4.2 Degeneracy of the genetic code ... Tyrosine UAC (Tyr/Y) Tyrosine UAA Ochre ( stop ) UAG Amber ( stop ) UGU (Cys/C) Cysteine UGC (Cys/C) ...

Alga

... the green algae (see Charales ), in a lineage that eventually led to the higher land plants. The point where these non-algal plants begin and algae stop is usually taken to be the presence of reproductive organs with protective cell layers, a characteristic not found in the other algal groups. ...

Alternative splicing

... the mRNA transcript. However, the intron must be properly encoding for amino acids . The intron's code must be properly expressible, otherwise a stop codon or a shift in the reading frame will cause the protein to be non-functional. Exon cassette mode : in this case, certain exons are spliced ...

Amino acid

... incorporated into proteins during translation: Selenocysteine is incorporated into some proteins at a UGA codon , which is normally a stop codon. Pyrrolysine is used by some methanogens in enzymes that they use to produce methane . It is coded for similarly to selenocysteine ...

Full blood count

... 3.1 Red cells 3.2 White cells 3.3 Platelets Automated blood count Blood for a FBC is usually taken into an EDTA tube to stop it from clotting . The blood is well mixed (though not shaken) and put through a machine. The machine, called an automated analyser , counts the ...

Cartilage

... Cartilage tutorial public domain text from Gray's anatomy dated 1918, so probably needs updating I've heard 'Ears and nose do not ever stop growing.' Is this true? ...

Cell division

... division eventually halts, and the cell is then referred to as senescent . Senescent cells deteriorate and die, causing the body to age. Cells stop dividing because the telomeres , protective bits of DNA on the end of a chromosome , become shorter with each division and eventually can no longer ...

Charles Darwin

... of stomach pains, vomiting, severe boils and other symptoms which frequently limited his working time to a few minutes a day or forced him to stop working and recuperate. First writings on theory Darwin made attempts to explain his theory to close friends, but they were slow to show ...

Dialysis

... with the same patient at a later date). Needle wounds (in case of fistula) are bandaged with gauze, held for up to 1 hour with direct pressure to stop bleeding, then the taped in place. It's just like getting blood draw, only it takes a lot longer, and more fluid/Blood is lost. Temperature, ...

Digital organism

... History Digital organisms can be traced back to the game Core War , in which computer programs had to compete with each other and try to stop the opponent from executing . It turned out that one of the winning strategies was to replicate as fast as possible, which had the result that ...

Eugenics

... to bring a clearly disabled child into the world" ) and James D. Watson ( "Once you have a way in which you can improve our children, no one can stop it." ), have recently spoken in support of "voluntary" eugenics. See also Brave New World Compulsory sterilization Cosmotheism ...

Gene

... similar effect by shifting reading frames during translation. The translation of RNA into a protein also starts with a specific start and stop sequence. Once produced, the protein interacts with the many other proteins in the cell, according to the cell metabolism . This interaction ...

Har Gobind Khorana

... RNAs with four repeating units including UAG, UAA, or UGA, produced only dipiptides and tripeptides thus revealing that UAG, UAA and UGA are stop codons. With this Dr.khorana and his team had established that the mother of all codes , the biological language common to all living organisms, ...

Homeostasis

... They oppose change to maintain equilibrium. If the system does not succeed in reestablishing its balance, it may ultimately lead the system to stop functioning. Complex systems , such as a human body, must have homeostasis to maintain stability and to survive. These systems do not only have to ...

Alga

... the green algae (see Charales ), in a lineage that eventually led to the higher land plants. The point where these non-algal plants begin and algae stop is usually taken to be the presence of reproductive organs with protective cell layers, a characteristic not found in the other algal groups. ...

Ribosome

... Figure 3 : Translation (1) of mRNA by a ribosome (2) into a polypeptide chain (3). The mRNA begins with a start codon ( AUG ) and ends with a stop codon ( UAG ). In Figure 3, both ribosomal subunits ( small and large ) assemble at the start codon (the 5' end of the mRNA). The ribosome uses ...

Transformation

... cells are converted into cells that will continue to divide without limit. Normal cells can divide only a certain number of times before they will stop dividing. Cells that have been transformed no longer have such a limit (for example, cancer cells) are able to grow and divide potentially forever. ...
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