Which structures perform the function of mitochondria in bacteria?

Question

Answer

Mesosomes.....

Answer

Misosomes are infoldings of cell membrane, misosomes perform respiration and secretion ..in prokaryotic organisms..

Answer

Mesosomes are the infolding of the bacterial cell membrane.

These structures are thought to be analogous to the eukaryotic mitochondria.

As mitochondria are the site of respiration, these mesosomes carry out respiration in the bacteria.

So, the correct answer is 'Mesosomes'.

Answer

Mesosomes perform the function of mitochondria in bacteria.

Answer

Introduction:
Mitochondria are membrane-bound organelles found in eukaryotic cells that play a crucial role in energy production. However, bacteria are prokaryotic organisms that lack compartmentalized organelles like mitochondria. Instead, they possess specialized structures that perform similar functions to mitochondria.

Key Pointers:
The function of mitochondria in eukaryotic cells is carried out by several structures in bacteria, including:

1. Plasma Membrane:
The plasma membrane of bacteria is the site of numerous metabolic reactions, including energy production. It contains enzymes involved in electron transport and oxidative phosphorylation, which are key processes in cellular respiration.

2. Nucleoid:
The nucleoid is the region in the bacterial cell where the genetic material is located. It contains circular DNA molecules called plasmids, which encode genes involved in energy metabolism. These genes produce proteins that participate in the electron transport chain and ATP synthesis.

3. Cytoplasm:
The cytoplasm of bacteria contains enzymes and molecules necessary for various metabolic pathways, including glycolysis, the Krebs cycle, and fermentation. These pathways generate ATP, which is the primary source of energy for cellular processes.

4. Ribosomes:
Ribosomes are responsible for protein synthesis in all cells, including bacteria. They translate messenger RNA into proteins that are involved in energy production and other cellular functions.

5. Gas Vesicles:
Some bacteria possess gas vesicles, which are structures composed of proteins that allow the bacteria to regulate their buoyancy. By controlling their position in water, bacteria can optimize their exposure to light and nutrients, facilitating energy production through photosynthesis.

6. Thylakoids:
Certain bacteria, such as cyanobacteria, have thylakoid membranes that contain pigments involved in photosynthesis. These membranes are responsible for capturing light energy and converting it into chemical energy, similar to the role of chloroplasts in plant cells.

Conclusion:
While bacteria lack mitochondria, they possess various structures that perform similar functions. The plasma membrane, nucleoid, cytoplasm, ribosomes, gas vesicles, and thylakoids are all involved in energy production and other metabolic processes in bacteria. Understanding these structures helps us comprehend the diverse ways in which different organisms obtain and utilize energy.

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Which structures perform the function of mitochondria in bacteria? [2014]

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Which structure perform the function of mitochondria in bacteria?

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