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- Question
Phage typing is based on the fact that
Options- A. viruses cause disease
- B. bacteria and viruses are related
- C. bacteria are destroyed by viruses
- D. bacterial viruses attack specific cells
- Correct Answer
- bacterial viruses attack specific cells
ExplanationPhage typing is based on the fact that bacterial viruses attack specific cells. Phage typing is a method used for detecting single strains of bacteria. It is used to trace the source of outbreaks of infections.
- 1. The fluid mosaic model describes the structure of
Options- A. cell
- B. plasma membrane
- C. nucleus
- D. All of the above Discuss
- 2. Cytoplasm contains all the organelles.
Options- A. TRUE
- B. FALSE Discuss
- 3. Which of the following is a feature of ghrelin?
Options- A. It stimulates appetite and energy storage
- B. It is released in high amounts from adipocytes during periods of excess energy intake
- C. The blood level in the fasting state correlates directly with body weight
- D. It is a metabolic antagonist of leptin Discuss
- 4. What process accounts for species diversity?
Options- A. Predation
- B. Mitosis
- C. Symbiosis
- D. Meiosis Discuss
- 5. Which one of the following is a plant hormone?
Options- A. Cytokinin
- B. Oestrogen
- C. Thyroxin
- D. Insulin Discuss
- 6. Lysergic acid diethylamide (LSD) is a drug used as a
Options- A. Sedative
- B. Hallucinogen
- C. Steroid
- D. Analgesic Discuss
- 7. Oxygen crosses a plasma membrane by
Options- A. Osmosis
- B. Evaporation
- C. Concatenation
- D. Diffusion Discuss
- 8. Antibodies are produced by
Options- A. B Lymphocytes
- B. Pathogens
- C. Both A & B
- D. None of the above Discuss
- 9. Where does meiosis take place in bryophytes?
Options- A. Capsule
- B. Protonema
- C. Antheridia
- D. None of the above Discuss
- 10. Which word best describes the structure of the cell membrane?
Options- A. Rigid
- B. Impermeable
- C. Nonpolar
- D. Layered Discuss
Biology problems
Search Results
Correct Answer: plasma membrane
Correct Answer: FALSE
Explanation:
Cytoplasm does not contains all the organelles.
Correct Answer: It stimulates appetite and energy storage
Correct Answer: Meiosis
Explanation:
The process accounts for species diversity is Meiosis. Meiosis is termed as a specialized cell division which reduces chromosomes number by half and then creates for haploid cells.
Correct Answer: Cytokinin
Explanation:
Cytokinins is a Plant hormone which helps in cell division and leads to Growth & formation of shoots, roots & bud.
Correct Answer: Hallucinogen
Explanation:
Lysergic acid diethylamide (LSD) is a drug used as a Hallucinogen.
Correct Answer: Osmosis
Explanation:
Oxygen crosses a plasma membrane by Osmosis.
Correct Answer: B Lymphocytes
Correct Answer: Capsule
Explanation:
Meiosis takes in the capsule of the Bryophytes.
Correct Answer: Layered
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