Chpt 17. Part 1: Transcription Flashcard

Front

What is the function of a mRNA poly-A tail?

Back

The poly-A tail protects the mRNA from degradation.

Front

According to the central dogma, what is the intermediate molecule in the flow of information from DNA to proteins?

Back

RNA

Front

What accurately describes the usual process of eukaryotic transcription?

Back

Both introns and exons are transcribed, but the RNA transcribed from introns does not leave the nucleus.

Front

What is the full process by which genotype becomes expressed as phenotype called?

Back

Gene expression.

Front

Which statement about transcription is false?

Back

RNA polymerase, like DNA polymerase, requires a primer to begin RNA synthesis.

Front

What is transcription?

Back

Transcription is the process that creates an RNA product from a sequence of DNA.

Front

What role does RNA polymerase play in transcription?

Back

RNA polymerase builds RNA molecules from a DNA template.

Front

What is a promoter in the context of transcription?

Back

A promoter is a sequence of DNA within a gene where RNA polymerase can begin transcription.

Front

What are introns?

Back

Introns are non-coding sequences in a gene that are transcribed but are removed during RNA processing.

Front

What are exons?

Back

Exons are coding sequences in a gene that are transcribed and remain in the final mRNA product.