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- Question
The number of flagella produced by motile cells in
Options- A. members of the Rhodophyta is greater than members of the Phaeophyta
- B. members of the Phaeophyta is greater than members of the Rhodophyta
- C. members of the Rhodophyta is exactly or approximately equal to members of the Phaeophyta
- D. none of the above
- Correct Answer
- members of the Phaeophyta is greater than members of the Rhodophyta
- 1. Which of the following is correct?
Options- A. Mycorrhizae are fungi that form a mutually beneficial (symbiotic) relationship with plant roots
- B. The fungi aid in transmitting nutrients and water to the plant roots
- C. The increased nutrient availability from mycorrhizae is thought to be due to the additional absorbing surface provided by the fungi
- D. All of the above Discuss
- 2. Which of the following fungi on infecting crop roots can improve their uptake of phosphorus and other nutrients?
Options- A. Saccharomyces cerevisiae
- B. VA Mycorrhiza
- C. Candida torulopsis
- D. Aspergillus niger Discuss
- 3. The bacteria most often involved in the spoilage of fish are
Options- A. part of the natural flora of the external slime of fishes and their intestinal contents
- B. part of the natural flora of the internal slime of fishes only
- C. both (a) and (b)
- D. none of the above Discuss
- 4. Advanced treatment is generally used to treat waste water to
Options- A. remove coarse solids
- B. remove settleable solids
- C. reduce BOD
- D. remove additional objectionable substances Discuss
- 5. Which statement is true about flavouring materials spices, garlic etc. added to Dill pickles?
Options- A. These markedly stimulate or inhibit the acid forming bacteria
- B. They may be source of considerable numbers of undesirable micro-organisms and cause off-fermentations or spoilage of pickles
- C. They may improve texture of the pickle
- D. None of these Discuss
- 6. The fermentation of wine can be carried out using the strains of
Options- A. Saccharomyces cerevisiae
- B. Saccharomyces carlsbergenesis
- C. Bacillus subtilis
- D. Pedicoccus cerevisiae Discuss
- 7. Which of the following is exposed on the outer surface of a gram-negative bacterium?
Options- A. O-antigen of lipopolysaccharide (LPS)
- B. Polysaccharide portion of lipoteichoic acid (LTA)
- C. Braun lipoprotein
- D. Electron transport system components Discuss
- 8. Which is not an antigen-presenting cell (or APC)?
Options- A. B cell
- B. Polymorphonuclear leukocyte (or PMN)
- C. Dendritic cell
- D. All of the above Discuss
- 9. Which of the following is correct for CD8 T cells?
Options- A. CD8 T cells only recognize virus-infected cells
- B. CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells
- C. In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only
- D. CD8 T cells can kill individual virus-infected cells in a contact dependent fashion Discuss
- 10. In lysogeny,
Options- A. a bacteriophage transfers bacterial DNA
- B. bacteria take up double stranded DNA from the environment
- C. DNA-degrading enzymes in the extracellular medium would stop the process
- D. a bacteriophage genome is integrated into the bacterial genome Discuss
More questions
Correct Answer: All of the above
Correct Answer: VA Mycorrhiza
Correct Answer: part of the natural flora of the external slime of fishes and their intestinal contents
Correct Answer: remove additional objectionable substances
Correct Answer: They may be source of considerable numbers of undesirable micro-organisms and cause off-fermentations or spoilage of pickles
Correct Answer: Saccharomyces cerevisiae
Correct Answer: O-antigen of lipopolysaccharide (LPS)
Correct Answer: Polymorphonuclear leukocyte (or PMN)
Correct Answer: CD8 T cells can kill individual virus-infected cells in a contact dependent fashion
Correct Answer: a bacteriophage genome is integrated into the bacterial genome
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