Question

41. All these terms categorize microorganisms based on their temperature preference EXCEPT:
       Mesophile
       Psychrophile
       Psychrotroph
       Chemoautotroph

48. Lactic acid bacteria and Escherichia coli are important commensal microflora in the small intestine because they aid in digestion and help synthesize important vitamins such as vitamin C and riboflavin.
True
False

59. The environmental conditions on human skin have NaCl levels slightly above that of most bacterial cells. What category of organism would most likely be part of the normal skin microflora?
       A halotolerant organism
       An obligate halophile
       An obligate anaerobe
       A psychrophile

63. Which of the following cell structures CANNOT be seen using conventional microscope staining techniques?
       Inclusions
       Ribosomes
       Capsule
       Cell wall

66. Each laboratory has developed tables for differentiating the genera and species important in their laboratories. There is not an internationally recognized reference that can be relied on.
True
False

Answer 1

41)Chemoautotroph doesn't belongs to temperature preference.This is based on category of intake of food.Mesophile,Psychrophile,Psychrotroph are based on temperature preferences.

48)It is a false statement.Lactic acid bacteria doesn't help in synthesis of vitamin C and retinol.

59)As human skin have NaCl levels higher than normal bacterial contents.Many of the organisms cannot live on the human Human skin.But some of the organisms can live on the Human skin.These are Halotolerant organisms.

63)Inclusions can be stained as these are nuvlearvor cytoplasmic proteins.Cell wall can be stained by chan stain and capsule can be stained by Welch stain.Ribosomes are small structures and these cannot be stained by normal conventional techniques.

66)It is a false statement.And there are international recognition for genus and species.