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MCQs

Total Questions : 339 | Page 4 of 34 pages
Question 31. All of the following individuals contributed to cell theory except
  1.    Robert Hooke
  2.    Matthias Schleiden
  3.    Theodor Schwann
  4.    Rudolf Virchow
 Discuss Question
Answer: Option A. -> Robert Hooke
Answer: (a).Robert Hooke
Question 32. Which cell type is considered to have the oldest ancestor?
  1.    Archaea
  2.    Bacteria
  3.    Eukarya
  4.    they all share the same ancestor
 Discuss Question
Answer: Option D. -> they all share the same ancestor
Answer: (d).they all share the same ancestor
Question 33. What is Mycology?
  1.    Study of viruses
  2.    Study of nucleic acid
  3.    Study of bacteria
  4.    Study of fungi
 Discuss Question
Answer: Option D. -> Study of fungi
Answer: (d).Study of fungi
Question 34. Which of the following organelles contain DNA, divides and possesses some degree of autonomy?
  1.    Golgi apparatus
  2.    Ribosome
  3.    Chloroplast
  4.    Peroxisomes
 Discuss Question
Answer: Option C. -> Chloroplast
Answer: (c).Chloroplast
Question 35. Eukaryotic micro organisms include
  1.    protozoa
  2.    fungi
  3.    algae
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 36. All of the following are sporicidal except
  1.    glutaraldehyde
  2.    ethylene oxide
  3.    formaldehyde
  4.    alcohol
 Discuss Question
Answer: Option D. -> alcohol
Answer: (d).alcohol
Question 37. The process of making an object free from living organisms including bacterial and fungal spores and viruses is known as
  1.    pasteurization
  2.    antisepsis
  3.    disinfection
  4.    sterilization
 Discuss Question
Answer: Option D. -> sterilization
Answer: (d).sterilization
Question 38. Which of the following describes the effect of ionizing radiation on microbes?
  1.    Changes the 3-dimensional structure of proteins to a 2-dimen-sional form
  2.    Substantially decreases enzymatic activity, slowing microbial reproduction
  3.    Induces electrons and protons to jump out of the molecules of the microbe
  4.    None of the above
 Discuss Question
Answer: Option C. -> Induces electrons and protons to jump out of the molecules of the microbe
Answer: (c).Induces electrons and protons to jump out of the molecules of the microbe
Question 39. A(n)____is used to prevent infection by killing or inhibiting pathogen growth on animal tissues.
  1.    bacteriostatic agent
  2.    sanitizer
  3.    disinfectant
  4.    antiseptic
 Discuss Question
Answer: Option D. -> antiseptic
Answer: (d).antiseptic
Question 40. Media containing spores and thermolabile constituents are sterilized by
  1.    pasteurization
  2.    UV radiation
  3.    dry heat
  4.    tyndalization
 Discuss Question
Answer: Option B. -> UV radiation
Answer: (b).UV radiation

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