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MRNA
TTCGGT
DNA is made of of two complimentary strands, the coding strand and the template strand. When DNA is transcribed (made into messenger RNA which can be converted by ribosomes into proteins) the DNA splits open and free nucleotide bases bind to the template strand. DNA is made of T/C/G/A and RNA is made of U/C/G/A nucleotide bases. G and C bind (they are said to be 'complimentary') A and T bind and in RNA U and A bind (so U replaces T.) The newly formed RNA strand (made on the template stand of DNA) is 'complimentary' to the template but the same as the coding strand of DNA. Hence the template is used to produce RNA which is a copy of the coding strand. Either strand of DNA can act as the template/coding strand. Hope that is a little bit helpful!
replicated DNA is made of one old strand and one new strand.
DNA is not made into mRNA, it is transcribed by mRNA. The DNA molecule is split into two strands by the enzyme helicase. One strand is the sense strand and the other is the anti-sense strand. Then mRNA nucleotides pair with their complimentary DNA bases on the antisense strand. The enzyme RNA polymerase causes the mRNA nucleotides to bond with one another, forming a strand of mRNA.
The sequence would be GACGGT
The central enzyme involved is DNA polymerase, which catalyzes the joining of deoxyribonucleoside 5′-triphosphates (dNTPs) to form the growing DNA chain.
THat would be the enzyme DNA Polymerase III which attaches free floating nucleotides to the parent strand. But remember, they can only be attached to a free 3' position!
A binds with T, G binds with C.Therefore the complementary strand for ATCGCATT would be TAGCGTAA.
taacgggtac
There is no such process. DNA cannot come from RNA unless it contains reverse transcriptase. However, there is a process that makes mRNA from a DNA strand. This process is called transcription.
The complimentary strand of MRNA would be AAUUCCGG.