Session

Are Introns or exons larger?

• Introns are larger than exons.
• Introns and exons are the same size.
• Exons are smaller than introns.
• Exons are larger than introns.

What Contains the genes for Ribosomes?

• dRNA

• rRNA

• tRNA

• mRNA

Which polymerase are Ribosomes transcribed?

• RNA polymerase III
• RNA polymerase II
• DNA polymerase II
• RNA polymerase I

What does the termination sequence contain?

• A series of error messages generated during execution

• A set of inverted repeats and a strech of u’s

• A list of all active processes in the system.
• Random data points that have no significance.

When does the promotor become available during transcription?

• When the ribosome assembles on the mRNA.
• The promoter becomes avaiable after the first strand becomes 50-60 bases long

• When the DNA is fully unwound.
• When the transcription factors are released.

Why is transcription in eukaryotes tightly regulated?

• To ensure all genes are expressed simultaneously.
• To promote rapid cell division.
• To prevent any form of gene expression.
• To ensure proper gene expression and cellular function

What does RNA polymerase I contain? (as in the different RNAs)

• mRNA and tRNA
• mRNA

• rRNA

• sRNA

What does RNA polymerase II contain?

• mRNA

• mRNA and snRNA

• rRNA and tRNA

• snRNA and tRNA

What does RNA polymerase III contain? (as in the different RNAs)

• snRNA

• tRNA

• mRNA

• rRNA

How is transcription of protein-coding genes regulated? (by what)

• Transcription factors and regulatory elements (enhancers, silencers) regulate transcription.

• DNA replication factors influence transcription.
• RNA polymerase alone regulates transcription.

• Ribosomes and amino acids control transcription.