Quiz 9

Which of the following sequences of nucleotides are possible in the template strand of DNA that would code for the polypeptide sequence Phe-Leu-Ile-Val?

3-AAA-GAA-TAA-CAA-5

Refer to the figure. Which of the triplets below is a possible anticodon for a tRNA that transports proline to a ribosome?

3-GGC-5

What is the function of RNA polymerase?

It unwinds the double helix and adds nucleotides to a growing strand of RNA.

What is gene expression?

The process by which DNA directs the synthesis of proteins

What is the template strand?

The strand of DNA that provides the sequence of nucleotides for transcription.

How many nucleotides code for an amino acid?

Three

What is the role of the promoter?

To indicate the sequence of DNA where the RNA polymerase attaches and initiated transcription

Where do transcription and translation occur in eukaryote cells?

Transcription occurs in the nucleus and translation occurs in the cytoplasm

What is a ribozyme?

a biological catalyst made of RNA

After an RNA molecule is transcribed from a eukaryotic gene, what are removed and what are spliced together to produce an mRNA molecule with a continuous coding sequence?

introns ... exons