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Question

An electron micrograph of a bacterium reveals extensions of the plasma membrane in the form of vesicles, tubules and lamellae. Damage to these structures is followed by disturbances in cell-wall formation, DNA distribution, respiration and secretion.
Which structure has most probably been damaged?

Options

Choose one · Correct answer highlighted

Glycocalyx, because it forms vesicles that synthesise bacterial DNA Chromatophore, because every chromatophore controls cell-wall formation Inclusion body, because it is a membrane-bound respiratory compartment Mesosome, because it is a plasma-membrane infolding with these structural forms and associated functions Correct

Explanation

Mesosomes are extensions of the bacterial plasma membrane that occur as vesicles, tubules and lamellae. They are associated with cell-wall formation, DNA replication and distribution, respiration, secretion, and increased membrane surface area and enzymatic content.

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Practice question

An electron micrograph of a bacterium reveals extensions of the plasma membrane in the form of vesicles, tubules and lamellae. Damage to these structures is followed by disturbances in cell-wall formation, DNA distribution, respiration and secretion.
Which structure has most probably been damaged?

Options

Explanation

Comments

Related blogs

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An electron micrograph of a bacterium reveals extensions of the plasma membrane in the form of vesicles, tubules and lamellae. Damage to these structures is followed by disturbances in cell-wall formation, DNA distribution, respiration and secretion. Which structure has most probably been damaged?

Options

Explanation

Comments

Related blogs

Experiment 9: Study of Meiosis in Onion Bud Cells or Grasshopper Testis Using Permanent Slides

Telomeres - Structure, Functions, End Replication Problem, Telomerase, Aging, Disease and Factors Affecting Length

HtrA Gene and Protein - Structure, Dual Functions, Apoptosis Mechanism and Disease | Pointwise Notes with Maroon Highlights

Install Examtube

An electron micrograph of a bacterium reveals extensions of the plasma membrane in the form of vesicles, tubules and lamellae. Damage to these structures is followed by disturbances in cell-wall formation, DNA distribution, respiration and secretion.
Which structure has most probably been damaged?