AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following processes produces mRNA?
A
translation
B
transcription
Explanation: 

Detailed explanation-1: -The process that produces mRNA is known as transcription. Transcription is the first process that occurs during protein synthesis when part of the DNA strand is copied and sent out of the nucleus.

Detailed explanation-2: -An mRNA transcript is made by an enzyme called RNA polymerase II.

Detailed explanation-3: -During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene.

Detailed explanation-4: -mRNA is created during transcription. During the transcription process, a single strand of DNA is decoded by RNA polymerase, and mRNA is synthesized.

Detailed explanation-5: -Transcription is performed by enzymes called RNA polymerases, which link nucleotides to form an RNA strand (using a DNA strand as a template). Transcription has three stages: initiation, elongation, and termination.

There is 1 question to complete.