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What is the function of primers?
RNA primers are used to initiate the DNA replication at the template strand. DNA molecules require a free 3' OH, to which it could add the nucleotides. This free 3' OH is provided by the RNA primer. So prior to the synthesis of DNA a short fragment of RNA is synthesized that is later excised and filled with DNA molecules.
What is 5 minus 3 and 3 5?
5 - 3 and 3/5 = 1 and 2/5
What is a recurring pattern in DNA with a 3 dimensional structure called?
motif
What is 1 third of 5 add 5?
1/3 of 5 add 5 = 1/3*5 + 5 = 5/3 + 5 = 12/3 + 5 = 62/3 or 20/3
Subtract the square of 5 from the square of -3?
√-3 - √5 = i√3 - √5 = -√5 + i√3
When DNA replicates what are the new DNA made of?
its made of DNA. Replication just doubles the DNA, just like when bacteria or humans replicate.. the new human is .. well made of human.... It is opposite and anti-parallel.... 5-AATGTC-3 Original strand 3-TTACAG-5 new strand Each new molecule will have 1 original strand, and 1 daughter/newly synthesized strand. DNA replication results in DNA DNA transcription results in a strand of RNA
In which direction does RNA polymerase read a DNA strand?
The correct answer is: RNA is synthesized by RNA polymerase that reads one strand of DNA. RNA polymerase reads DNA 3' to 5'. When RNA is made, it is made 5' to 3'. Most polymerases have the 3' to 5' "reading" activity. The created RNA strand is identical to the coding strand of DNA, which is also in the orientation of 5' to 3'.
What okazaki fragments are?
In DNA replication, the two DNA strands acting as templates need to be synthesized simultaneously. DNA polymerase is an enzyme which can synthesize the DNA only in 5' to 3' direction.the two template strands are anti-parallel to each other and their complementary strands are synthesized in different direction. In one of the strand DNA is synthesized continuously by adding nucleotides at 3'-OH end. this is referred as 'leading strand' synthesis. the other strand to be synthesized is replicated in short fragments referred 'Okazaki fragments' named after their discoverer Reiji Okazaki.
What are leading strands?
Leading strands are one of the two newly synthesized DNA strands during DNA replication. They are synthesized in a continuous manner in the 5' to 3' direction, following the replication fork. The leading strand is synthesized in the same direction as the replication fork is moving, allowing for continuous synthesis.
DNA is synthesized during?
prophase
What is an end replication problem?
The two strands of a DNA molecule are antiparallel to one another (the backbone of one strand runs from 5'-3' while the complimentary strand runs 3'-5'). Unfortunately, DNA polymerase, the enzyme responsible for replicating DNA, can only make DNA in a 5'-3' direction (and read DNA in the 3'-5' direction). Also, it needs a "primer" to give it a place to bind and start replication. So this creates a problem when synthesizing the 3'-5' stand because your enzyme will only synthesize 5'-3'. During replication this is solved by synthesizing small pieces of DNA ahead of the replication fork on the 5'-3' mother strand. Thus we have one daughter strand which is synthesized as a continuous piece of DNA (called the leading strand) and one daughter strand which is synthesized in small, discontinuous pieces (called the lagging strand). However, at the extreme end of the DNA, we run into another problem. The leading stand can be made to the very end, but the lagging strand cannot because you need the RNA primer upstream to begin each piece of the lagging strand DNA but at the end of the DNA there is nothing for this piece to attach to. Thus, the last section of the lagging strand cannot be synthesized and after several rounds of DNA replication, the DNA molecule gets smaller and smaller. This is "the end of replication problem" and it is solved by putting a DNA cap on the ends of DNA called a telomere which does not code for any protein, thus when this information is lost it does not have severe consequences for the cell.
The process by which RNA is synthesized from the DNA?
Transcription
Which of the following statements regarding cDNA libraries is false?
a. They are usually double stranded DNA. b. They are composed of DNA synthesized with the use of reverse transcriptase. c. They are composed of DNA synthesized from an mRNA template. d. They contain introns and exons. e. They contain DNA that is complementary to the mRNA from which it was synthesized.
What is the DNA strand that is synthesized continuously during DNA replication?
leading strand
What is Heterogeneous nuclear DNA?
Pre-mRNA. It is the mRNA that is synthesized in the nucleus of eukaryotes. After being synthesized, this mRNA is processed, so that introns, noncoding, DNA is removed.
IF DNA is labeled radioactive and allowed to replicate how much radioactivity in newly synthesized DNA?
WHAT IS DNA MADE FROM>
What is the term for the DNA strand that acts as a pattern to the newly synthesized DNA?
template strand
