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Question #46718

Difficulty: 8/10 | 🟢 Free

The Question

Mesosomes are characteristic membranous infoldings in prokaryotes that perform functions analogous to mitochondria and assist in cell wall formation. Considering the unique structural blueprint of Mycoplasma, which of the following statements is INCORRECT?

Options

  • A.

    Typical eubacteria utilize mesosomes for DNA replication, secretion processes, and increasing the surface area of the plasma membrane.

  • B.

    Mycoplasma compensates for the lack of a cell wall by forming extensive, rigid mesosomal networks to maintain cellular shape and facilitate aerobic respiration.

  • C.

    Mycoplasma are the smallest known living cells and can survive without oxygen, thus not strictly depending on aerobic respiratory complexes.

  • D.

    The complete absence of a peptidoglycan cell wall renders Mycoplasma naturally resistant to antibiotics like penicillin.

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Correct Answer

Step-by-Step Solution

Explanation

How the Examiner Thinks

Evolutionary_Exception

Tackle problems where standard rules evolve or change based on specific environmental constraints.

Concepts Behind This Question

Prokaryotic Mesosome Geometry|Abiogenesis vs. Biogenesis|Symbiotic Nitrogen Fixation

Why This Question Is Tricky

Common Mistakes

The 'Conceptual Pivot' lies in the overgeneralization of prokaryotic features.

Students memorize that mesosomes are the universal 'mitochondria equivalent' and structural aid in prokaryotes.

The trap exploits this by suggesting Mycoplasma uses mesosomes to compensate for its missing cell wall, whereas the lack of a cell wall actually prevents the formation of stable, rigid mesosomal geometry, resulting in characteristic pleomorphism.

Quick Facts About This Question

Question Information

SubjectBiology
ChapterCell – The Unit of Life - Class 11
ConceptProkaryotic Mesosome Geometry
Difficulty8
Cognitive Load5
Target Solve Time120 sec
AccessFree