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Home ‣ Biochemistry ‣ Nucleic Acids See What Others Are Saying!
- Question
Nucleotide bases and aromatic amino acids absorb light respectively at
Options- A. 280 and 260 nm
- B. 260 and 280 nm
- C. 270 and 280 nm
- D. 260 and 270 nm
- Correct Answer
- 260 and 280 nm
- 1. To clone into a plasmid vector, both the plasmid and the foreign DNA are cut
Options- A. with the same restriction enzyme and mixed together
- B. with different restriction enzyme and mixed together
- C. with the combination of enzymes and then seperated
- D. with the combination of enzymes and mixed together Discuss
- 2. A purine with an amine (NH2) group on the 6th carbon is
Options- A. adenine
- B. cytosine
- C. thymine
- D. guanine Discuss
- 3. What is the proportion of glycine residues in collagenous regions?
Options- A. One-fourth
- B. One-third
- C. Half
- D. One-tenth Discuss
- 4. Fructose is metabolized by
Options- A. fructose 1-phosphate pathway
- B. fructose 6-phosphate pathway
- C. glyceraldehyde 3-phosphate pathway
- D. both (a) and (b) Discuss
- 5. The active form of glycogen phosphorylase is phosphorylated, while the dephosphorylation of which active form occurs?
Options- A. Glycogen synthase
- B. Glycogen semisynthase
- C. Glycogen hydrolase
- D. Glycogen dehydrogenase Discuss
- 6. Synthesis of fatty acid takes place when
Options- A. fatty acid are plentiful
- B. carbohydrate is plentiful
- C. carbohydrate and energy are plentiful
- D. none of these Discuss
- 7. 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
- 8. Gluconeogenesis requires a higher amount of ATP equivalents as compared to that produced by glycolysis because
Options- A. gluconeogenesis releases energy as heat
- B. glycolysis releases energy as heat
- C. glycolysis occurs in the mitochondria while gluconeogenesis occurs in the cytosol
- D. all of the above Discuss
- 9. Difficulties with somatic gene therapy arise from all of the following except
Options- A. GVHD caused by mature T cells in the transplanted cells
- B. inserting a gene so that it will function properly
- C. limited life span of more mature hematopoietic cells
- D. transducing genetic material into stem cells Discuss
- 10. Which pair of amino acids absorbs the most UV light at 280 nm?
Options- A. Threonine & Histidine
- B. Trp & Tyrosine
- C. Cystein & Asparagine
- D. Phenylalnine & Proline Discuss
More questions
Correct Answer: with the same restriction enzyme and mixed together
Correct Answer: adenine
Correct Answer: One-third
Correct Answer: both (a) and (b)
Correct Answer: Glycogen synthase
Correct Answer: carbohydrate and energy are plentiful
Correct Answer: is a tumor supressor
Correct Answer: glycolysis releases energy as heat
Correct Answer: GVHD caused by mature T cells in the transplanted cells
Correct Answer: Trp & Tyrosine
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