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 occur in the cell?
A
Nucleus
B
Ribosome
C
Anywhere
Explanation: 

Detailed explanation-1: -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-2: -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-3: -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-4: -The nuclear envelope of eukaryotic cells separates the nucleus and cytoplasm. It is thought to partition transcription and processing of messenger RNAs (mRNAs), which occur in the nucleus, from protein synthesis (translation), which is observed in the cytoplasm.

Detailed explanation-5: -Transcription occurs in the nucleus whereas the major mRNA decay pathways operate in the cytoplasm.

There is 1 question to complete.