bio chapter 17 mastering

During RNA processing a(n) _____ is added to the 3' end of the RNA.

a long strand of adenine nucleotides

polypeptides are assembled from

amino acids

Which of the following terms best describes the relationship between the newly synthesized RNA molecule and the DNA template strand?

complementary

translation occurs in the

cytoplasm

The RNA segments joined to one another by spliceosomes are

exons

RNA processing converts the RNA transcript into

mRNA

During RNA processing a(n) _____ is added to the 5' end of the RNA.

modified guanine nucleotide

DNA does not store the information to synthesize which of the following

organelles

Which of the following terms associated with transcription describe regions of nucleic acid?

promotor, gene, terminator

Spliceosomes are composed of

snRNPs and other proteins

for any given gene, what ultimately determines which DNA strand serves as the template strand?

the base sequence of the gene's promoter

Which of the following statements best describes the promoter of a protein-coding gene?

the promoter is a nontranscribed region of a gene.

What is the process called that converts the genetic information stored in DNA to an RNA copy?

transcription

What name is given to the process in which a strand of DNA is used as a template for the manufacture of a strand of pre-mRNA?

transcription

What name is given to the process in which the information encoded in a strand of mRNA is used to construct a protein?

translation

A particular triplet of bases in the template strand of DNA is 5-AGT-3. What would be the corresponding codon for the mRNA that is transcribed?

3-UCA-5

the direction of synthesis of an RNA transcript is

5' to 3'

Transcription begins at a promoter. What is a promoter?

A site in DNA that recruits the RNA Polymerase

What determines which base is to be added to an RNA strand during transcription?

Base pairing between the DNA template strand and the RNA nucleotides

What happens to RNA polymerase II after it has completed transcription of a gene?

It is free to bind to another promoter and begin transcription.

first transcription event

RNA polymerase binds promoter

last transcription event

RNA polymerase exits gene, RNA is released

third transcription event

RNA polymerase reaches terminator

second transcription event

RNA polymerase transcribes gene

Which of the following statements best describes the termination of transcription in prokaryotes?

RNA polymerase transcribes through the terminator sequence, causing the polymerase to separate from the DNA and release the transcript.

What name is given to the process in which pre-mRNA is edited into mRNA?

RNA processing