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Free Download as PDF of Cell Biology Questions with Answers as per exam pattern, to help you in day to day learning. We provide all important questions and answers for all Exam.
37. A substance that forms an insoluble complex with stain and serves to fix the color to bacterial cell is called as ________.
- [A] mordant
- [B] intensifier
- [C] fixative
- [D] dyes
Answer: Option [A]
38. A stain which on ionization gives positively charged molecules is referred as ________.
- [A] acidic stain
- [B] Basic stain
- [C] anionic stain
- [D] basic mordant
Answer: Option [A]
39. The charged group of bacterial cell surface produces attraction between basic stain ________.
- [A] negative
- [B] positive
- [C] neutral
- [D] all of the above
Answer: Option [B]
40. The differential staining technique refers as ________ staining.
- [A] monochrome
- [B] Gram
- [C] negative
- [D] endospore
Answer: Option [B]
41. The Petroff-Hausser counting chamber consist of ________.
- [A] 25 squares
- [B] 100 squares
- [C] 50 squares
- [D] none of the above
Answer: Option [A]
42. The process that reduces the bacterial count to safe levels as may judged by the public health is referred as ________.
- [A] sterilization
- [B] sanitization
- [C] disinfection
- [D] antisepsis
Answer: Option [B]
43. Slide culture technique is used for ________ cultivation
- [A] bacterial
- [B] fungi
- [C] virus
- [D] algae
Answer: Option [B]
44. Maintenance of sterile condition is referred as ________.
- [A] aseptic technique
- [B] septic technique
- [C] disinfection
- [D] fumigation
Answer: Option [A]
45. ___________ is referred as biological indicator of autoclave.
- [A] Bacillus stearothermophilus
- [B] Bacillus subtilis
- [C] Bacillus megatorium
- [D] Bacillus cereus
Answer: Option [A]
46. Colorimeter is applied only in relation to _______.
- [A] uv light
- [B] X rays
- [C] visible light
- [D] IR rays
Answer: Option [A]
47. Separation of small molecule can be done by ______
- [A] viscometer
- [B] centrifugation
- [C] flow cytometry
- [D] spectrophotometer
Answer: Option [B]
48. The pH meter standardized with pH ________
Answer: Option [A]
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