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- Question
Why does the glycolytic pathway continue in the direction of glucose catabolism?
Options- A. There are essentially three irreversible reactions that act as the driving force for the pathway
- B. High levels of ATP keep the pathway going in a forward direction
- C. The enzymes of glycolysis only function in one direction
- D. Glycolysis occurs in either direction
- Correct Answer
- There are essentially three irreversible reactions that act as the driving force for the pathway
- 1. A purified protein sample contains 10 ?g of protein and has an enzyme activity of 1 m mole of ATP synthesized/sec (1 unit). What is the specific activity of the final purified sample?
Options- A. 1,000 units/mg
- B. 10,000 units/mg.
- C. 100,000 units/mg
- D. 1,000,000 units/mg Discuss
- 2. In protein synthesis in prokaryotes
Options- A. the initiating amino acid is N- formyl methionine
- B. the initiating amino acid is methionine
- C. the initiating amino acid is phenyl alanine
- D. none of the above Discuss
- 3. Some genetic diseases cannot be diagnosed by changes in restriction sites. Some of these can be detected by allele-specific oligonucleotide probes. These are
Options- A. copies of the gene with an altered sequence so that a restriction site is inserted
- B. mutagenized copies of a gene
- C. short sequences that will hybridize only to a specific base sequence
- D. PCR-amplified variable numbers of tandem repeats (VNTRs) Discuss
- 4. Split injection is carried out by
Options- A. splitting the sample into smaller portions to inject sequentially
- B. splitting the sample into smaller portions to inject at the same time through parallel ports
- C. splitting off some of the sample so that it does not enter the column
- D. none of the above Discuss
- 5. To elicit the best antibodies to mouse MHC I, it should be injected into a
Options- A. goat
- B. mouse of the same genetic background (strain)
- C. mouse of a different strain
- D. rat Discuss
- 6. Hydrogen bonds in a-helices are
Options- A. more numerous than Vander Waals interactions
- B. not present at Phe residues
- C. analogous to the steps in a spiral staircase
- D. roughly parallel to the helix axis Discuss
- 7. If the oxygen is labeled in CO2 and provide this CO2 to a plant, where it is expected to find this labeled oxygen after the plant had undergone photosynthesis?
Options- A. In the water used
- B. In the NADPH
- C. In the carbohydrate produced
- D. In the oxygen given off by the plant Discuss
- 8. What do coenzyme A, CO2, oxaloacetate, and FADH2 all have in common?
Options- A. They are all components or products of the citric acid cycle
- B. They are part of the dark reactions of photosynthesis
- C. They are part of the reactions of lactic acid fermentation
- D. They are all elements of oxidative phosphorylation Discuss
- 9. Antenna complexes, electron transport chains, and carbon fixation are all found in
Options- A. animal cells
- B. bacterial cells
- C. plant cells
- D. association with the reactions of the citric acid cycle Discuss
- 10. Column bleeding occurs when
Options- A. elution of the analyte is extended over time
- B. the column is cracked and stationary phase leaks out
- C. traces of the stationary phase are eluted
- D. the column breaks during installation and causes personal injury Discuss
More questions
Correct Answer: 100,000 units/mg
Correct Answer: the initiating amino acid is N- formyl methionine
Correct Answer: short sequences that will hybridize only to a specific base sequence
Correct Answer: splitting off some of the sample so that it does not enter the column
Correct Answer: goat
Correct Answer: roughly parallel to the helix axis
Correct Answer: In the carbohydrate produced
Correct Answer: They are all components or products of the citric acid cycle
Correct Answer: plant cells
Correct Answer: traces of the stationary phase are eluted
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