Discussion
Home ‣ Biochemistry ‣ Genetic Code and Regulation Comments
- Question
Translation begins
Options- A. at the replication fork
- B. on the lagging strand
- C. at the start codon
- D. in nucleus
- Correct Answer
- at the start codon
- 1. Nucleoside is a pyrimidine or purine base
Options- A. covalently bonded to a sugar
- B. ionically bonded to a sugar
- C. hydrogen bonded to a sugar
- D. none of the above Discuss
- 2. The sugar in RNA is __________ , the sugar in DNA is __________
Options- A. deoxyribose, ribose
- B. ribose, deoxyribose
- C. ribose, phosphate
- D. ribose, uracil Discuss
- 3. The most stabilizing force for nucleic acids is
Options- A. hydrogen bonds
- B. electrostatic bond
- C. Van der Waals
- D. conformational entropy Discuss
- 4. Nucleic acids can be analyzed experimentally by their
Options- A. molecular weight
- B. absorption of visible light
- C. absorption of uv light
- D. none of these Discuss
- 5. Which pyrimidine base contains an amino group at carbon 4?
Options- A. Cytosine
- B. Thymine
- C. Uracil
- D. Adenine Discuss
- 6. The sequence of one strand of DNA is: 5' ATTGCCA 3', what is the sequence of the other strand?
Options- A. 5' TAACGGT 3'
- B. 5' TGGCAAT 3'
- C. 5' ATTGCCA 3'
- D. 5' UAAGCCU3' Discuss
- 7. Bacterial protein called catabolic activator protein (CAP) is an example of
Options- A. negative control of gene expression
- B. positive control of gene expression
- C. second type of positive control of gene expression
- D. none of the above Discuss
- 8. The genetic code is degenerated. Which of the following codons represents the principle of degeneracy?
Options- A. UAA and UAC
- B. AUG and AUA
- C. CAU and CAC
- D. UUA and UUC Discuss
- 9. In prokaryotes, AUG encodes
Options- A. methionine
- B. N-formyl methionine
- C. a stop codon
- D. alanine Discuss
- 10. Which of the following has been used as an evidence that primitive life forms lacked both DNA and enzymes?
Options- A. RNA can both code genetic information and act as a catalyst
- B. DNA and enzymes are only present in the most advanced cells
- C. Advanced cells lack RNA
- D. All of the above Discuss
Genetic Code and Regulation problems
Search Results
Correct Answer: covalently bonded to a sugar
Correct Answer: ribose, deoxyribose
Correct Answer: Van der Waals
Correct Answer: absorption of uv light
Correct Answer: Cytosine
Correct Answer: 5' TGGCAAT 3'
Correct Answer: second type of positive control of gene expression
Correct Answer: CAU and CAC
Correct Answer: N-formyl methionine
Correct Answer: RNA can both code genetic information and act as a catalyst
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