AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Where does the process of transcription take place?
A
In the cytoplasm
B
At the ribosome
C
In the nucleus
D
Outside the cell
Explanation: 

Detailed explanation-1: -The eukaryotic nucleus therefore provides a distinct compartment within the cell, allowing transcription and splicing to proceed prior to the beginning of translation. Thus, in eukaryotes, while transcription occurs in the nucleus, translation occurs in the cytoplasm.

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: -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-4: -Transcription occurs in the nucleus and not in the cytoplasm in eukaryotes because eukaryotes store the DNA in the nucleus. In prokaryotes, there is no nucleus and the DNA is in the cytoplasm. Thus, transcription can occur in the cytoplasm as well.

Detailed explanation-5: -Transcription is the process in which a gene’s DNA sequence is copied (transcribed) to make an RNA molecule. RNA polymerase is the main transcription enzyme. Transcription begins when RNA polymerase binds to a promoter sequence near the beginning of a gene (directly or through helper proteins).

There is 1 question to complete.