Question

A student creates a Gram stain on a bacterial sample that has a mix of gram-negative and gram-positive organisms. The student accidentally forgets the decolorizer step. What would the outcome of the Gram stain be?

a. The Gram stain would show pink (gram-negative bacteria) and purple (gram-positive bacteria).b. All organisms would appear purple (gram-positive).c. All organisms would appear colorless.d. All organisms would appear pink (gram-negative).

Answer 1

b. All organisms would appear purple (gram-positive)