AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In what process is mRNA synthesized?
A
Transcription
B
Translation
C
DNA Replication
D
Mitosis
Explanation: 

Detailed explanation-1: -mRNA is “messenger” RNA. mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. This process requires nucleotide triphosphates as substrates and is catalyzed by the enzyme RNA polymerase II. The process of making mRNA from DNA is called transcription, and it occurs in the nucleus.

Detailed explanation-2: -The synthesis of mRNA from DNA occurs in several stages: initiation, elongation, editing (processing), and termination. Initiation of transcription (the synthesis of mRNA) occurs when factors that serve to stabilize nuclear DNA are perturbed. Perturbation signals pass in to the nucleus and stimulate transcription.

Detailed explanation-3: -mRNA is made from a DNA template during the process of transcription.

Detailed explanation-4: -In eukaryotic cells, however, the two processes are separated in both space and time: mRNAs are synthesized in the nucleus, and proteins are later made in the cytoplasm.

Detailed explanation-5: -RNA is synthesized from DNA by an enzyme known as RNA polymerase during a process called transcription.

There is 1 question to complete.