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Questions and Answers
What is the name of the microorganism with the following characteristics: Shape - Cocci, Arrangement - irregular clusters, Colour - Violet, Gram's reaction - Gram's +ve?
What is the name of the microorganism with the following characteristics: Shape - Cocci, Arrangement - irregular clusters, Colour - Violet, Gram's reaction - Gram's +ve?
- Bacillus
- Staphylococci (correct)
- Gram negative bacilli
- Candida
What is the correct arrangement of cocci bacteria that divide in 3 planes?
What is the correct arrangement of cocci bacteria that divide in 3 planes?
- Pairs
- Single
- Clusters (correct)
- Chains
Which of the following is a common error that can occur during Gram staining?
Which of the following is a common error that can occur during Gram staining?
- Using a young culture
- Using fresh reagents
- Using a thin smear
- Decolorizing for too long (correct)
What is the recommended age of the culture for a valid Gram staining procedure?
What is the recommended age of the culture for a valid Gram staining procedure?
Which of the following is a characteristic of the cell wall of Mycobacteria?
Which of the following is a characteristic of the cell wall of Mycobacteria?
What is the purpose of using control cultures during the Gram staining procedure?
What is the purpose of using control cultures during the Gram staining procedure?
What is the most likely cause of a Gram positive bacterium appearing Gram negative during the staining procedure?
What is the most likely cause of a Gram positive bacterium appearing Gram negative during the staining procedure?
Which of the following is the correct Gram reaction and name for the microorganism with the following characteristics: Shape - Rods, Arrangement - Single, Color - red, Gram's reaction - Gram's –ve?
Which of the following is the correct Gram reaction and name for the microorganism with the following characteristics: Shape - Rods, Arrangement - Single, Color - red, Gram's reaction - Gram's –ve?
What is the likely cause of a crystal violet precipitate being observed on an epithelial cell during Gram staining?
What is the likely cause of a crystal violet precipitate being observed on an epithelial cell during Gram staining?
Which of the following is a characteristic of the cell division pattern in Streptococcus bacteria?
Which of the following is a characteristic of the cell division pattern in Streptococcus bacteria?
