Microbiology Laboratory Techniques Quiz

Enzyme-linked immunosorbent assay (ELISA) is used to detect the presence of antibodies in body fluids.

Bacteria that do not grow in culture cannot be seen under a microscope.

Wet films provide wider field of view compared to stained smears.

Electron microscopy can be used to observe the movement of microorganisms.

Immunological methods are not able to identify organisms.

Gram staining divides bacteria into two groups: true or false?

Crystal violet stains the bacterial cells pink in Gram staining: true or false?

The alcohol treatment in Gram staining helps the crystal violet bind tightly with the bacterial cells: true or false?

Gram-negative bacteria have a thicker peptidoglycan layer in their cell wall compared to Gram-positive bacteria: true or false?

Gram staining categorizes bacteria into three groups: true or false?

The alcohol treatment in Gram staining causes the crystal violet to wash out from Gram-negative bacteria but not from Gram-positive bacteria: true or false?

The iodine treatment in Gram staining helps the crystal violet bind tightly with the bacterial cells: true or false?

Gram-positive bacteria have a thinner cell wall compared to Gram-negative bacteria: true or false?

Gram staining divides bacteria into three groups: true or false?

The alcohol treatment in Gram staining causes the crystal violet to wash out from Gram-positive bacteria but not from Gram-negative bacteria: true or false?

The iodine treatment in Gram staining helps the crystal violet bind tightly with the bacterial cells: true or false?

Crystal violet stains the bacterial cells pink in Gram staining: true or false?