Transcription & Translation

A short sequence of nucleotides reads GGACAGAGCGCAGACGA. In which type of molecule could this sequence be found?

• DNA molecule only

• RNA molecule only

• Both in a DNA and an RNA molecule

• In double-stranded DNA only

What do DNA replication, transcription and translation have in common?

• Take place in cell nucleus

• Require free nucleotides

• Catalysed by polymerase

• Complementary base pairing

What is a feature of transcription?

• Both strands of a DNA molecule act as a template for mRNA.

• Nucleoside triphosphates become nucleotides by losing three phosphates.

• RNA polymerase binds to the promoter region.

• The sense strand acts as a template for mRNA.

What does post-transcriptional modification of eukaryotic mRNA include?

I. Introns are removed from mRNA.

II. Exons are joined together to form mature mRNA.

III. A 5' cap and 3' poly-A tail are added to mRNA.

• I only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-LS1-1

How is the information in the genetic code used?

• To predict the genotype of gametes

• To distinguish prokaryotic genomes from eukaryotic genomes

• To deduce phenotypes in pedigree charts

• To translate mRNA into polypeptides

Tags

NGSS.HS-LS1-1

What happens during transcription in eukaryotes?

• Polysomes move.

• Nucleosomes are phosphorylated.

• RNA polymerase separates DNA strands.

• Okazaki fragments are produced.

What is a feature of transcription?

• Both strands of a DNA molecule act as a template for mRNA.

• Nucleoside triphosphates become nucleotides by losing three phosphates.

• RNA polymerase binds to the promoter region.

• The sense strand acts as a template for mRNA.

What makes up eukaryotic RNA immediately after transcription?

• Exons, introns and primers

• Exons and introns

• Introns only

• Exons only

What are introns?

• Sequences of nucleotides that are removed to form mature RNA in eukaryotes

• Sequences of nucleotides that are removed to form mature RNA in prokaryotes

• Sequences that remain in mature RNA after exons have been removed

• Small pieces of circular DNA that are found in prokaryotes

On which molecule is a codon found?

• DNA

• mRNA

• tRNA

• rRNA