Prokaryotes And Viruses(Life Sciences ) Questions and Answers

Question 1. Which of the following gene deduced the evolutionary relationship between the taxonomic groups?
  1.    16S rRNA
  2.    23S rRNA
  3.    5S rRNA
  4.    18S rRNA
Explanation:-
Answer: Option A. -> 16S rRNA
Answer: (a).16S rRNA
Question 2. Mark the common feature between eukaryotes and prokaryotes.
  1.    Shape of DNA
  2.    Number of chromosomes
  3.    A prokaryotic cell is similar to a eukaryotic organelle
  4.    Cell wall
Explanation:-
Answer: Option C. -> A prokaryotic cell is similar to a eukaryotic organelle
Answer: (c).A prokaryotic cell is similar to a eukaryotic organelle
Question 3. The largest bacteria which can be visible by unaided eye is_______
  1.    Thiomargarita namibiensis
  2.    Lactobacillus
  3.    Mycoplasma
  4.    Pseudomonas
Explanation:-
Answer: Option A. -> Thiomargarita namibiensis
Answer: (a).Thiomargarita namibiensis
Question 4. Which of the following is NOT the basic shape of the bacteria?
  1.    Rod shape
  2.    Square shape
  3.    Comma shape
  4.    Spiral shape
Explanation:-
Answer: Option B. -> Square shape
Answer: (b).Square shape
Question 5. Name the scientist who proposed the phylogenetic tree for living things.
  1.    Carlo Urbani
  2.    Louis Pasteur
  3.    Robert Koch
  4.    Carl Woese
Explanation:-
Answer: Option D. -> Carl Woese
Answer: (d).Carl Woese
Question 6. Name the bacteria which are responsible for the odor of moist soil.
  1.    Mycoplasma
  2.    Borelia burgdorferi
  3.    Streptomyces
  4.    Cyanobacteria
Explanation:-
Answer: Option C. -> Streptomyces
Answer: (c).Streptomyces
Question 7. Name the causative agent of syphilis.
  1.    Mycobacteria
  2.    Streptococcus
  3.    Pseudomonas
  4.    Treponema palladium
Explanation:-
Answer: Option D. -> Treponema palladium
Answer: (d).Treponema palladium
Question 8. Is archebacteria a type of bacteria?
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
Explanation:-
Answer: Option B. -> False
Answer: (b).False
Question 9. Mark the INCORRECT statement about cyanobacteria.
  1.    Gram-negative bacteria
  2.    Photolithoautotrophic organism
  3.    They do not have a fully functional citric acid cycle
  4.    Reproduce only by binary fission
Explanation:-
Answer: Option D. -> Reproduce only by binary fission
Answer: (d).Reproduce only by binary fission
Question 10. What is sarcinae?
  1.    Cocci group of bacteria
  2.    Chainlike group of bacteria
  3.    Cubelike group of bacteria
  4.    Grapelike cluster of bacteria
Explanation:-
Answer: Option C. -> Cubelike group of bacteria
Answer: (c).Cubelike group of bacteria
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