What color do Gram-positive bacteria exhibit after being stained with crystal violet dye?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Biology Mcqsbiology-mcqs
Published
12 Sept 2019
Last updated
28 May 2026

Browse all Biology Mcqs

Choose the correct answer

Explanation

Gram-positive bacteria retain the crystal violet stain during the Gram staining process, resulting in a purple coloration under the microscope.

SolveExam — free MCQs and past papers for Pakistan government job tests. Content is for educational practice only.