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Home ‣ Microbiology ‣ Nucleic Acid Structure See What Others Are Saying!
- Question
Stem and loop structures are
Options- A. proteins that help partially denatured enzymes to recover their native configuration
- B. structures in DNA caused by inverted repeats
- C. structures at the ends of linear eukaryotic DNA molecules
- D. the bonds between adjacent DNA nucleotides in the same strand
- Correct Answer
- structures in DNA caused by inverted repeats
- 1. Which is not an amino acid and peptide antibiotic?
Options- A. Penicillin
- B. Actinomycin
- C. Bacitracin
- D. Tetranactin Discuss
- 2. A major organic acid produced by a microbial process used in foods is
Options- A. sulfuric acid
- B. citric acid
- C. oxalic acid
- D. uric acid Discuss
- 3. During fermentation, pyruvic acid is converted into organic products such as
Options- A. glucose and fructose
- B. starch and cellulose
- C. ethyl alcohol and lactic acid
- D. citric acid and isocitric acid Discuss
- 4. White spot in meat is formed due to presence of
Options- A. P. expansum
- B. Sporotrichum carnis
- C. both (a) and (b)
- D. P. oxalicum Discuss
- 5. Bacterial spoilage is identified by which of the following morphological characteristics?
Options- A. Encapsulation
- B. Endospores
- C. Cell aggregation
- D. All of these Discuss
- 6. Mac-Conkey medium is an example of
Options- A. transport medium
- B. enrichment medium
- C. differential medium
- D. all of these Discuss
- 7. The production of sufficient acid by fermentation of glucose leads to decrease in pH such that pH of the medium falls below 4.5. Which of the following test can detect it?
Options- A. Indole test
- B. Methyl red test
- C. Citrate utilization test
- D. Voges-Proskauer test Discuss
- 8. Stringent anaerobes can be grown in a media by taking special measure as
Options- A. boiling the media for several minutes
- B. addition of cysteine
- C. passing through oxygen-free nitrogen
- D. any of these Discuss
- 9. Which of the following modified amino acid is used at the starting of most prokaryotic proteins?
Options- A. N-formylserine
- B. N-formylmethionine
- C. N-formylleucine
- D. N-formylalanine Discuss
- 10. The viruses, which is/are transmitted by parenteral and sexual routes is/are
Options- A. Hepatitis B virus
- B. Hepatitis C virus
- C. Hepatitis G virus
- D. All of these Discuss
More questions
Correct Answer: Tetranactin
Correct Answer: citric acid
Correct Answer: ethyl alcohol and lactic acid
Correct Answer: Sporotrichum carnis
Correct Answer: All of these
Correct Answer: differential medium
Correct Answer: Methyl red test
Correct Answer: any of these
Correct Answer: N-formylmethionine
Correct Answer: All of these
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