Discussion
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- Question
When a substance is added to a liquid medium which inhibits the growth of unwanted bacteria and favors the growth of wanted bacteria, it is known as
Options- A. differential medium
- B. enriched medium
- C. enrichment medium
- D. selective medium
- Correct Answer
- enrichment medium
- 1. Which of the cause(s) has/have been suggested for the chill rings in sausage?
Options- A. Oxidation
- B. Production of organic acids or reducing substances by bacteria
- C. Excessive water
- D. all of the above Discuss
- 2. What was the first eukaryotic chromosome to be sequenced?
Options- A. Yeast chromosome III
- B. Yeast chromosome XI
- C. Arabidopsis chromosome IV
- D. None of these Discuss
- 3. Three stop codons, which aids in termination of translation are also known as
Options- A. pause codons
- B. nonsense codons
- C. missense codons
- D. antisense codons Discuss
- 4. Which of the following organism has sterols in their cytoplasmic membrane?
Options- A. Clostridum
- B. Proteus
- C. Mycoplasma
- D. Bacillius Discuss
- 5. In which of the following, lipo-polysaccharide is a major constituent of outer membrane of the cellwall?
Options- A. Gram-positive bacteria
- B. Gram-negative bacteria
- C. Fungi
- D. None of these Discuss
- 6. Antigen binding sites of an immunoglobulin are located in
Options- A. light chain alone
- B. heavy chain alone
- C. Fc region of the antibody
- D. Fab regions of the antibody Discuss
- 7. The role of the M cell is to
Options- A. trap virus in mucus and prevent entry
- B. induce apoptosis in virus-infected small intestinal epithelia cells
- C. pass bacteria or virus to underlying macrophages for processing and presentation of antigen
- D. they use their cilia to propel mucus out of the small intestine Discuss
- 8. What is the action of tetracycline in prokaryotes?
Options- A. It blocks translocation reaction on ribosomes
- B. It blocks peptidyl transferase reaction on ribosomes
- C. It blocks the binding of amino-acyl tRNA to the A site of ribosomes
- D. Not known with certainity Discuss
- 9. Holozoic nutrition is characterized by
Options- A. phagocytosis of solid nutrients and subsequent formation of phagocytic vacuoles
- B. pinocytosis of solid nutrients and subsequent formation of phagocytic vacuoles
- C. phagocytosis of soluble nutrients and subsequent formation of phagocytic vacuoles
- D. photosynthesis Discuss
- 10. If the mash in the brewhouse is held too long it may undergo
Options- A. butyric acid fermentation
- B. lactic acid fermentation
- C. both (a) and (b)
- D. citric acid fermentation Discuss
More questions
Correct Answer: all of the above
Correct Answer: Yeast chromosome III
Correct Answer: nonsense codons
Correct Answer: Mycoplasma
Correct Answer: Gram-negative bacteria
Correct Answer: Fab regions of the antibody
Correct Answer: pass bacteria or virus to underlying macrophages for processing and presentation of antigen
Correct Answer: It blocks the binding of amino-acyl tRNA to the A site of ribosomes
Correct Answer: phagocytosis of solid nutrients and subsequent formation of phagocytic vacuoles
Correct Answer: both (a) and (b)
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