alleryGram-positive and Gram-negative bacteria are distinguished by
AThe number of chromosomes per cell
BThe geometric shape of the bacterial cell
CThe response to the Gram staining procedure
DThe presence or absence of ribosomes
Answer & Solution
Correct answer: C. The response to the Gram staining procedure
Differential staining devised by Christian Gram (1884).
Differences in cell-wall peptidoglycan thickness and the presence of an outer membrane in Gram-negatives produce the colour difference.
syllabus cites the Gram stain explicitly.
Keep practising Cell Structure, Health and Hygiene
Browse all Cell Structure, Health and Hygiene questions for NEET UG, or explore more Biology topics.
Related questions
Membrane-bound or not?Prokaryote, eukaryote or both?Match each organelle to its jobSpot the odd cell partThe structure that holds sister chromatids together during cell division is theCentrioles are seen inIn a eukaryotic cell, lysosomal enzymes work atIn chloroplasts, the Calvin cycle (light-independent reactions) takes place in the