Question

Which of the following events occurs during transcription?

a.Those segments of the RNA strand that do not actually code for the protein are removed.

b. A molecule of RNA is formed based on the sequence of nucleotides in DNA.

c. The message in mRNA is translated into a protein.

d. A cap is added to the RNA molecule.
mRNA binds to a ribosome in the cytoplasm.

Answer 1

During transcription, a molecule of RNA is created that mirrors the sequence of nucleotides in DNA, which then leaves the nucleus to assist in protein synthesis during translation.

Step-by-step explanation:

The event that occurs during transcription is 'b. A molecule of RNA is formed based on the sequence of nucleotides in DNA.' During transcription, the DNA sequence of a gene is transcribed into an RNA molecule. This process begins when the DNA unwinds, and transcription factors, along with RNA polymerase, bind to the DNA sequence. RNA polymerase then synthesizes the mRNA strand by adding complementary nucleotides to the growing RNA chain. As a result, mRNA is created as a single-stranded transcript of the DNA which carries the genetic information necessary for protein synthesis. This mRNA later exits the nucleus and enters the cytoplasm for translation, at which point it interacts with ribosomes and tRNA to synthesize proteins.

Answer 2

Letter B. A molecule of RNA id formed based on the sequence of nucleotides in DNA

Step-by-step explanation:

The process to form a protein from the information in genes are called the central dogma of molecular biology, this dogma consists of two main steps.

Transcription Translation

DNA to → RNA to → Protein

The first one consists in to obtain a molecule of RNA using DNA molecules as a template, this RNA contains a message from the DNA. In the next step the RNA molecule act as a messenger (also called mRNA) because it contains the information to form a protein, in this point there are others additional steps, for example, removing the segments in the RNA that do not code a protein or the mRNA is modified to binds a ribosome ( structure that can “read” the message in the mRNA to form a protein).

To sum up, in transcription, we obtain a molecule of RNA that comes from DNA. The translation is the process to read de RNA to form a protein.