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Basically, the stars on the "Main Sequence" are the ones that fuse hydrogen-1 into helium-4. Once a star burns up its hydrogen-1 fuel, or doesn't have much left, it will start burning helium-4 into heavier elements. It is then that the star leaves the "Main Sequence".
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What is a unit of inheritance composed of a sequence of nucleotides of DNA?
It is known as a Gene. Along with its coding sequence it also possesses Start and Stop sequences.
What amino acid does rna sequence AAA specify?
No amino acid is coded for. It is a stop codon that instructs to stop the process of translation.
What is the terminator in mRNA synthesis?
a specific nucleotide sequence in DNA that signals a stop to transcription
How does transcription end?
Transcription ends once the a termination sequence is reached. The sequence depends on which polymerase is being used and if the organism is a eukaryote or prokaryote. In Eukaryotes when RNA polymerase 1 is used the termination sequence is an 18 nucleotide long sequence. For RNA polymerase 3 the termination sequence is a short sequence of Uricils but the hairpin loop is not formed as it is in prokaryotes. For RNA polymerase 2 transcription is terminated and cleavage takes place 10-35 nucleotides downstream of the AAUAA sequence. For prokaryotes, termination can occur 2 ways. Termination can occur once the termination sequence is reached or using a protein called Rho factor. For termination without Rho factor, the termination sequence is short and rich in Guanines and Cytosines followed by many Uricils in a row. A-U bonds are weaker than G-C bonds, the string of U-A bonds are easily broken and release the RNA strand Using a Rho factor, once the Terminal sequence is reached, the Rho factor binds to a sequence 50-90 bases long and unwinds the DNA from the RNA , moving towards the 3' end, releasing the RNA
How is glycolysis turned off?
When an enzyme in a pathway is inhibited by the product of the reaction sequence, feedback inhibition occurs. The product molecule "feeds back" to stop the reaction sequence when the product is abundant.
What makes a fusion stop in the main sequence stage?
A star falls of the main sequence when it has exhausted it's supply of hydrogen.
When does a star lose its main sequence?
Stars don't "lose" their "main sequence", because it's not something a star can "have" in the first place.Stars are more properly described as being "on" or "off" the "main sequence", and "sequence" isn't a good word for it anyway, because it implies that there is an actual sequence of events involved; in fact, the normal life sequence of a star has it going off the main "sequence".It may help if you stop thinking of them as "main sequence" stars and start thinking of them as either dwarfs or type III stars.
What marks the beginning and the ending of a gene on a DNA molecule?
start and stop sequences Also called Star and Stop codons. These are base triplets in the DNA base sequence. Examples of Stop Codons ar TAG or TGA.
What was Mrs Whatsit and why did she stop being this?
She was a star who gave her life to fight darkness.
How does a star start out to be a star?
Clouds of gas called Nebulae may become the foundation for stars to form. Forces of gravity will start to collect gas. When the atoms of mostly hydrogen start to fuse the star is called a protostar. Eventually the star will stop forming and enter the main sequence. This is the point where they are officially a star.
What does tobacco do to your tongue?
it makes me stop being hungry after i smoke a cig lol
How do you stop being a guest on tamagotchi music city?
You have to log in your tamagotchi music star or tama-go.
What is a disband war in Star Wars battlefront 2?
Afer you give the order: "FOLLOE ME", DISBAND makes the troops stop following you.
My van makes a loud noise when you put it in drive what do i do?
you have to stop being lazy and know it by yourself
What are some inspirational quotes from the misfits book?
I am about to stop being a kind of get along guy, and start being a guy that makes a difference
Stars leave the main sequence when they?
Stars are said to be off the main sequence when they stop fusing hydrogen into helium.
What function are carried out by those few condos that do not code for amino acides?
Start sequence and stop sequence codons.
