Transcription is similar to DNA replication in all of the following ways except:
a) the DNA strands unzip
b) the polymerase enzyme is involved
c) complementary bases are paired up
d) a new strand of mRNA is built from the existing DNA molecule
is it d?
Yes - because the new strand would be translation, not transcription :-)
Yes, you are correct. The correct answer is d) a new strand of mRNA is built from the existing DNA molecule.
In DNA replication, a new strand of DNA is built using the existing DNA molecule as a template. The process involves the separation of the two DNA strands, with each strand serving as a template for the synthesis of a new complementary strand of DNA. This results in two identical DNA molecules, each consisting of one original strand and one newly synthesized strand.
On the other hand, transcription is the process by which DNA is used as a template to synthesize a strand of mRNA (messenger RNA). During transcription, the DNA strands also unzip, complementary bases are paired up, and the polymerase enzyme is involved. However, instead of producing a new strand of DNA, transcription produces a complementary mRNA strand that matches the DNA template. This mRNA molecule contains the information necessary to guide the synthesis of proteins during translation.
No, it is not option d) "a new strand of mRNA is built from the existing DNA molecule."
Transcription is the process by which RNA is synthesized using a DNA template. During transcription, the DNA strands unzip, the polymerase enzyme is involved, and complementary bases are paired up (although RNA uses uracil instead of thymine). The correct answer is option c) "complementary bases are paired up." In transcription, complementary bases on the RNA molecule are paired with the DNA template, not with each other.