Cell Biology Practice Test 7

1. The studies that led to discovery of posttranscriptional gene silencing phenomena were performed on ____________

2. The chromosomal aberrations follow _____________________

3. In bacteria, binding of _________ factor to the RNA polymerase increases its affinity for promoter sites in the DNA.

4. In a bacterial operon, which is located downstream of the structural genes?

5. The “S” in the 80S ribosomes stands for _______________

6. Transcription is the synthesis of ______________________

7. The processing of pre-rRNA is done using __________

8. Which family of proteins plays a key role in gene silencing pathways?

9. Genes with intervening (non-coding) sequences are called ___________________

10. The transcriptional state of a cell is irreversible.