Q. Gram staining technique is used for the differentiation of gram-positive and gram-negative bacteria. What color do gram-negative bacteria show when observed under the microscope after the staining procedure? BluePinkPurpled)Green Answer: Pink

Q. Which of the following dye is commonly used for the Negative staining technique? Crystal violetIndia inkLactophenol cotton bluePeriodic acid- Schiff stain Answer: India ink

Q. A bacteriological stain also known as the differential stain is used for the identification of acid-fast organisms, what is the name of the stain? Negative stainGram stainZiehl-Neelsen stainSchaeffer Fulton stain Answer: Ziehl-Neelsen stain

Q. Which of the following pulmonary pathogens cannot be easily detected by the gram staining technique when performing a microscopy test? Pseudomonas aeruginosaStreptococcus pneumoniaeBordetella pertussisMycobacterium tuberculosis Answer: Mycobacterium tuberculosis

Q. A Capsule is a......................................layer lying outside the bacterial cell and can be found in both gram-positive and gram-negative bacteria Lipopolysaccharide layerPolysaccharidePhospholipidNone of the Above Answer: Polysaccharide

Q. Which of the following are the growth morphology of the protozoa? Multicellular and non motileUnicellular and non motileMulticellularUnicellular and motile Answer: Unicellular and motile

Q. Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? Streptococcus pneumoniaeBordetella pertussisClostridium tetaniStaphylococcus epidermidis Answer: Clostridium tetani

Q. Which of the following morphological characteristics is an important identification characteristic of Neisseria gonorrhoeae? Gram-Negative DiplococciGram-Positive BacilliGram-Negative BacilliGram-Positive Diplococci Answer: Gram-Negative Diplococci

Q. Which of the following is the example of encapsulated gram-positive bacteria? Klebsiella pneumoniaeClostridium perfringens    Streptococcus pneumoniaeHaemophilus influenzae Answer: Streptococcus pneumoniae

Q. Which of the following metabolic characteristic is a distinguishing characteristic and identification of colonies of E. coli? Hydrogen sulfide formationIndole FormationLactose fermentation   Urea Degradation Answer: Lactose fermentation