AP BIOLOGY

HEREDITY

MUTATIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In eukaryotes, DNA never leaves the nucleus of the cell. Therefore, the genetic information is carried from the nucleus to the protein producing mechanisms by ____
A
amino acids
B
RNA
C
glucose
D
phospahtes
Explanation: 

Detailed explanation-1: -In eukaryotes, transcription occurs in the nucleus. Following RNA processing, RNAs exit the nucleus to the cytoplasm where they are utilized. mRNAs in particular carry the information for protein sequences. Thus mRNAs are used to convey genetic information from the nucleus to the cytoplasm.

Detailed explanation-2: -Eukaryotic transcription proceeds in three sequential stages: initiation, elongation, and termination. The RNAs transcribed serve diverse functions. For example, structural components of the ribosome are transcribed by RNA polymerase I.

Detailed explanation-3: -Eukaryotic DNA never leaves the nucleus; instead, it’s transcribed (copied) into RNA molecules, which may then travel out of the nucleus. In the cytosol, some RNAs associate with structures called ribosomes, where they direct synthesis of proteins.

Detailed explanation-4: -tRNAs (transfer RNAs) carry amino acids to the ribosome. They act as “bridges, ” matching a codon in an mRNA with the amino acid it codes for.

There is 1 question to complete.