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- Question
Marfan's syndrome is thought to be a mutation affecting
Options- A. hemoglobin synthesis
- B. collagen synthesis
- C. metabolism of homogentisic acid
- D. insufficient thyroid production
- Correct Answer
- collagen synthesis
- 1. The major function of RNA polymerase's sigma factor is
Options- A. recognition of the translational stop sequence
- B. recognition of the transcriptional start sequence
- C. recognition of the transcriptional stop sequence
- D. recognition of the translational start sequence Discuss
- 2. Transcription begins
Options- A. at the start codon
- B. upstream from the start codon
- C. downstream from the start codon
- D. none of these Discuss
- 3. RNA is synthesized on a DNA template in a process called __________ , which utilizes the enzyme __________
Options- A. translation, RNA polymerase
- B. transcription, DNA polymerase
- C. transcription, RNA polymerase
- D. replication, DNA polymerase Discuss
- 4. Transcription of each set of rRNA genes by RNA polymerasel produces
Options- A. a single 45S rRNA precursor molecule
- B. a single 5S rRNA precursor molecule
- C. a single 18S rRNA precursor molecule
- D. a single 28S rRNA precursor molecule Discuss
- 5. Multiple copies of 5S genes, located at a chromosomal site distinct from the other rRNA genes
Options- A. are transcribed by rRNA polymerase III and the 5S rRNA
- B. are transcribed by rRNA polymerase II
- C. are transcribed by rRNA polymerase I and the 5S rRNA
- D. are transcribed by DNA polymerase I Discuss
- 6. BRACl, an inherited form of breast cancer, regulates cell division by
Options- A. binding to a DNA sequence
- B. complexing with cyclins
- C. binding to the cell outer membrane
- D. binding to the protein RAD 51 which repairs DNA damage Discuss
- 7. Individuals with PKU disease are mentally retarded unless
Options- A. phenylalanine in the diet is restricted
- B. tyrosine in the diet is restricted
- C. homogentisic acid in the diet is restricted
- D. none of the above Discuss
- 8. Cyclins are proteins that
Options- A. regulate ability of cells to invade tissue
- B. regulate passage from one stage of cell division to another
- C. regulate apoptosis of damaged cells
- D. none of the above Discuss
- 9. Over 50% of common cancers are associated with damage to a protein, p53. This protein
Options- A. is a cyclin
- B. is a tumor supressor
- C. is an oncogene
- D. regulates apoptosis Discuss
- 10. The four subunits of the hemoglobin (Hb) gene represent protein's
Options- A. primary structure
- B. secondary structure
- C. tertiary structure
- D. quaternary structure Discuss
Protein Structure problems
Search Results
Correct Answer: recognition of the transcriptional start sequence
Correct Answer: upstream from the start codon
Correct Answer: transcription, RNA polymerase
Correct Answer: a single 45S rRNA precursor molecule
Correct Answer: are transcribed by rRNA polymerase III and the 5S rRNA
Correct Answer: binding to the protein RAD 51 which repairs DNA damage
Correct Answer: phenylalanine in the diet is restricted
Correct Answer: regulate passage from one stage of cell division to another
Correct Answer: is a tumor supressor
Correct Answer: quaternary structure
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