Home › NEET UG › biology › Cell: The Unit of Life › Gram-positive and Gram-negative bacteria are dis…
Gram-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. NCERT 8.4.1 cites the Gram stain explicitly.
Related questions
Cilia and flagella exhibit the characteristic '9 + 2' arrangement of:Eukaryotic ribosomes are typically:Chromoplasts in plants are responsible for:Lysosomes are sometimes called the 'SUICIDE BAGS' of the cell because they:The Rough Endoplasmic Reticulum (RER) has its ribosomes attached to perform:Mitochondria are called the 'POWERHOUSE OF THE CELL' because they:A structure UNIQUE to plant cells (NOT found in animal cells) is the:Prokaryotic cells DIFFER from eukaryotic cells in that prokaryotes: