Discussion
Home ‣ Microbiology ‣ Micro Organisms See What Others Are Saying!
- Question
The foundation for the germ theory of disease was set down by
Options- A. Robert Koch
- B. Ronald Ross
- C. Louis Pasteur
- D. Walter Reed
- Correct Answer
- Louis Pasteur
- 1. The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of
Options- A. Liebig's law of the minimum
- B. Shelford's law of tolerance
- C. quorum sensing
- D. Heisenberg's principle of uncertainty Discuss
- 2. An exergonic reaction is one that
Options- A. requires energy to proceed
- B. releases energy for work
- C. gives off much heat
- D. looses energy Discuss
- 3. Examination of the presence / absence of organisms refers to
Options- A. incubation of a food suspension in an enrichment medium followed by inoculation on to a suitable selective medium.
- B. incubation of a food suspension in an enrichment medium followed by inoculation on to a non-selective medium.
- C. incubation of a food suspension in an enrichment medium
- D. none of the above Discuss
- 4. Pseudomonas nigrifaciens in mildly salted butter may cause
Options- A. black smudge
- B. greenish areas
- C. pink color
- D. none of these Discuss
- 5. The size of a single plant cell is usually within the range of
Options- A. 10-20?m in diameter and 25-100?m long
- B. 20-40?m in diameter and 100-200?m long
- C. 40-60?m in diameter and 200-300?m long
- D. 60-80?m in diameter and 300-400?m long Discuss
- 6. Viral matrix proteins are
Options- A. exposed on the surface of the virus
- B. found mainly on naked viruses
- C. anchor the envelope of enveloped viruses
- D. part of the nucleoprotein core of viruses Discuss
- 7. Saprophytic bacteria cause
Options- A. sliminess or souring in piled, wet and heating vegetables
- B. brown rot in vegetables
- C. black rot in fruits
- D. bacterial soft rot Discuss
- 8. Species of __________ are predominant on thawing vegetables like sweet corn and peas when the temperature of thawing is fairly low.
Options- A. Streptococcus
- B. Micrococcus
- C. both (a) and (b)
- D. none of these Discuss
- 9. Bacterial ropiness in milk is caused by
Options- A. slimy capsular material from the cells usually gums or mucins
- B. slimy capsular material from the cells usually proteins
- C. slimy capsular material from the cells usually lipids
- D. all of the above Discuss
- 10. Which of the following defines an open reading frame (ORF)?
Options- A. A sequence of genome in bacteriophage
- B. The sequence of a complete genome
- C. A plasmid vector used in genome sequencing
- D. A possible gene predicted by DNA sequencing Discuss
More questions
Correct Answer: quorum sensing
Correct Answer: releases energy for work
Correct Answer: incubation of a food suspension in an enrichment medium followed by inoculation on to a suitable selective medium.
Correct Answer: black smudge
Correct Answer: 20-40?m in diameter and 100-200?m long
Correct Answer: anchor the envelope of enveloped viruses
Correct Answer: sliminess or souring in piled, wet and heating vegetables
Correct Answer: Micrococcus
Correct Answer: slimy capsular material from the cells usually gums or mucins
Correct Answer: A possible gene predicted by DNA sequencing
Comments
There are no comments.More in Microbiology:
Programming
Copyright ©CuriousTab. All rights reserved.