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MCQs

Total Questions : 339 | Page 29 of 34 pages
Question 281. The foundation for the germ theory of disease was set down by
  1.    Louis Pasteur
  2.    Ronald Ross
  3.    Robert Koch
  4.    Walter Reed
 Discuss Question
Answer: Option A. -> Louis Pasteur
Question 282. Prokaryotic microorganism include
  1.    bacteria
  2.    fungi
  3.    protozoa
  4.    all of these
 Discuss Question
Answer: Option A. -> bacteria
Question 283. The first organism in most natural food chains is
  1.    a decomposer
  2.    photosynthetic
  3.    a herbivore
  4.    carnivorous
 Discuss Question
Answer: Option C. -> a herbivore
Question 284. Eukaryotic cell organelles first emerged
  1.    just before the origin of the animal and fungal kingdoms
  2.    when bacteria made their first attempts at reproduction
  3.    when prokaryotes engulfed each other and became interdependent
  4.    from a specialized lineage of cells within the kingdom Protista
 Discuss Question
Answer: Option C. -> when prokaryotes engulfed each other and became interdependent
Question 285. The third kingdom, protista, as suggested by E.H. Haeckel includes
  1.    algae
  2.    all of these
  3.    fungi
  4.    bacteria
 Discuss Question
Answer: Option B. -> all of these
Question 286. Who discovered the bacteria that cause cholera?
  1.    Louis Pasteur
  2.    Robert Koch
  3.    Rudolf Virchow
  4.    Pierre Berthelot
 Discuss Question
Answer: Option B. -> Robert Koch
Question 287. Which of the following microorganisms is classified as a member of archaebacteria?
  1.    Mycoplasma
  2.    Gyanobacteria
  3.    Trichomonads
  4.    Methanobacteria
 Discuss Question
Answer: Option D. -> Methanobacteria
Question 288. All the following are basic properties of cells except
  1.    cells are capable of producing more of themselves
  2.    cells have nuclei and mitochondria
  3.    cells have a genetic programme and the means to use it
  4.    cells are able to respond to stimuli
 Discuss Question
Answer: Option B. -> cells have nuclei and mitochondria
Question 289. Archeal cells usually do not contain peptidoglycan, rather contain pseudo-peptidoglycan which is mainly composed of
  1.    N-acetyltalosaminuronic acid and L-amino acids
  2.    N-acetyltalosaminuronic acid and D-amino acids
  3.    N-acetylmuramic acid and L-amino acids
  4.    N-acetylmuramic acid and D-amino acids
 Discuss Question
Answer: Option A. -> N-acetyltalosaminuronic acid and L-amino acids
Question 290. The idea of selective toxicity was first proposed by
  1.    Alexander Fleming
  2.    Antony van Leeuwenhoek
  3.    Louis Pasteur
  4.    Paul Ehrlich
 Discuss Question
Answer: Option D. -> Paul Ehrlich

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