AP BIOLOGY

Detailed explanation-1: -Transcription occurs in the nucleus whereas the major mRNA decay pathways operate in the cytoplasm. As synthesis and decay processes contribute equally to maintaining mRNA levels, it is quite likely that organisms have evolved a mechanism to coordinate events in the two compartments.

Detailed explanation-2: -During transcription, a piece of DNA that codes for a specific gene is copied into messenger RNA (mRNA) in the nucleus of the cell. The mRNA then carries the genetic information from the DNA to the cytoplasm, where translation occurs.

Detailed explanation-3: -The process of Transcription takes place in the cytoplasm in prokaryotes and in nucleus in eukaryotes. It uses DNA as a template to make an RNA (mRNA) molecule. During transcription, a strand of mRNA is made that is complementary to a strand of DNA .

Detailed explanation-4: -In transcription, DNA is converted to mRNA. It takes place in the nucleus of a cell. The newly formed mRNA, undergoes processing, and moves out into the cytoplasm through the nuclear pores, to proceed with the next step of protein synthesis, which is translation.

Detailed explanation-5: -Animal cell is an example of eukaryotic cell. In eukaryotic cell, transcription occurs in nucleus and translation occurs in the cytoplasm. During transcription, mRNA is synthesized on DNA template and the newly synthesised mRNA moves from nucleus into cytoplasm.