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FAQ: What are chromatophores in prokaryotes?

Complete answer: Chromatophores are internal membrane systems present in photosynthetic prokaryotes and should become extensive and sophisticated in photosynthetic bacteria. These develop as membrane lined sacs or thylakoids from the cell wall.

Are chromatophores present in eukaryotes?

Thus, the chromatophores of P. chromatophora are the only known cyanobacterial descendants besides plastids with a significantly reduced genome that confer photosynthesis to their eukaryotic host.

Where are chromatophores located in bacteria?

Chromatophores are internal membrane systems present in photosynthetic prokaryotes. These develop as membrane lined sacs orthylakoids from plasma membrane. Thylakoid membranes contain photosynthetic pigments in cyanobacteria and purple bacteria.

Is chromatophore a Mesosome?

Chromatophore is a pigment bearing cell or structure found in certain fish,reptiles and other animals. Mesosome is a folded invagination in the plasma membrane of bacteria produced by the chemical fixation techniques.

Are chromatophores found in cyanobacteria?

The cytoplasm of cyanobacteria bears a specialized compartment known as chromatophores. It contains various photosynthetic pigments necessary for performing photosynthesis. These pigments are chlorophyll a, carotenes, and xanthophylls. So, the correct answer is ‘Chromatophores.

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Are chromatophores prokaryotes?

Hint: Chromatophores are internal membrane systems present in photosynthetic prokaryotes. In certain photosynthetic bacteria, these structures are extensively found as a colored, membrane-associated vesicle containing different-colored pigments.

Which does a prokaryote not have?

Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm. The absence of a nucleus and other membrane-bound organelles differentiates prokaryotes from another class of organisms called eukaryotes.

What is the difference between chromatophores and mesosomes?

Chromatophores are the infoldings of plasma membrane containing pigments needed for photosynthesis. They contain pigment known as Bacteriochlorophyll like chloroplast have chlorophyll. Mesosomes are also invagination of plasma membrane and found in bacteria. They are the site for respiration.

What is pili and fimbriae?

Fimbriae and pili are hair-like appendages present on the bacterial cell wall similar to flagella. They are involved in the bacterial conjugation, attachment to the surface and motility. They are present in both Gram-positive and Gram-negative bacteria but more prevalent in Gram-negative bacteria.

Which of the following is the site of respiration in bacteria?

In bacteria, the process of respiration is performed in mesosomes. Mesosomes are folded invaginations in the cell membrane of bacteria.

Do bacteria have mesosomes?

Mesosomes are unique membranous structures in bacteria. It is recognized that the mesosomes should be involved in several fundamental processes. The structure and behaviour of mesosomes have been studied and largely identified, while new evidences of mesosome function have been strikingly obtained.

Do mesosome contain photosynthetic pigments?

Mesosomes are found in several heterotrophic bacteria. These invaginated structures are in the form of vesicles, tubules of lamellar whorls. It is present in cytoplasm which aids in increasing the surface area in photosynthetic prokaryotes, cyanobacteria, wherein it carries the photosynthetic pigments.

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Does mesosome help in cell wall formation?

Mesosomes are the invaginations of plasma membrane in bacteria. Thus, mesosomes help in cellular respiration. The folded invaginations increase the surface area of plasma membrane. They also help in cell wall formation.

What are chromatophores in cyanobacteria?

In some forms of photosynthetic bacteria, a chromatophore is a coloured, membrane-associated vesicle used to perform photosynthesis. They contain different coloured pigments. Chromatophores contain bacteriochlorophyll pigments and carotenoids.

What is chromatophore in algae?

(1) In animals and humans, a pigment cell. (2) In plants, an organelle of brown and green algae that may be filamentous (as in Spirogira) or stellate in form. Chromatophores contain bacteriochlorophylls, carotenoids, and a number of electron carriers, as well as enzymes that help synthesize pigments.

What is Mesosome made up of?

Answer: A special structure known as mesosome is formed by an extension of the plasma membrane into the cell wall. These extensions are usually in the form of vesicles, tubules, and lamellae.

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