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What is the principle of metachromatic granule staining?
metachromatic granules are polyphosphate granules found in Corynebacterium diphtheriae. They have the property of taking up a stain and exhibiting a different colour - metachromatia. thus they take up malachite green and appear dark blue in colour.
What three noteworthy physical characteristics of Corynebacterium diphtheriae are visible after performing a simple stain?
Pleomorphism, metachromatic granules, and palisade arrangement. Pleomorphism refers to the fact that C. diptheriae is rod-shaped but can appear club-shaped, needle-shaped, or spermlike. Metachromatic granules are reddish-purple granules that are visible when stained with metylene blue. Palisade arrangement refers to the presentation of rods in a parallel fashion that looks like a picket fence.
What Function of granules in bacteria?
to store nutrients
What is the function of glycogen granules in bacteria?
Our bodies way of storing carbohydrates.
What three noteworthy physical characteristics of Corynebacterium xerosis are visible after performing a simple stain?
Corynebacterium xerosis exhibits several distinctive physical characteristics when subjected to a simple stain. Firstly, it appears as small, rod-shaped (bacilli) bacteria that often cluster in V- or Y-shaped arrangements due to their unique binary fission process. Secondly, they typically display a Gram-positive reaction, resulting in a purple coloration under the microscope. Lastly, the presence of metachromatic granules, which may be visible as dark-staining inclusions within the cells, is a notable feature.
Are meta chromatic granules present in staphylococcus?
Metachromatic granules (volutin) are not made by staphylococcus.
What is the principle of metachromatic granule staining?
metachromatic granules are polyphosphate granules found in Corynebacterium diphtheriae. They have the property of taking up a stain and exhibiting a different colour - metachromatia. thus they take up malachite green and appear dark blue in colour.
What three noteworthy physical characteristics of Corynebacterium diphtheriae are visible after performing a simple stain?
Pleomorphism, metachromatic granules, and palisade arrangement. Pleomorphism refers to the fact that C. diptheriae is rod-shaped but can appear club-shaped, needle-shaped, or spermlike. Metachromatic granules are reddish-purple granules that are visible when stained with metylene blue. Palisade arrangement refers to the presentation of rods in a parallel fashion that looks like a picket fence.
What Function of granules in bacteria?
to store nutrients
What are the characteristics of the juvenile form of metachromatic leukodystrophy?
The juvenile form of metachromatic leukodystrophy is characterized by gait disturbances, urinary incontinence, mental deterioration, and emotional difficulties
What is the function of phosphate granules?
Phosphate granules store excess phosphate in bacterial cells. This allows bacteria to regulate intracellular phosphate levels and use them during times of phosphate scarcity.
What is metachromatic leukodystrophy?
Metachromatic leukodystrophy (MLD) is a rare degenerative neurological disease affecting the fatty covering that acts as an insulator around nerve fibers known as the myelin sheath.
What do people with Metachromatic Leukodystrophy die from?
Liver and kidney falure.
Which bacteria produces Yellow sulphur granules?
Actinomyces israelii is the classic pathogen that does this. It is a gram positive rod that forms branching filaments, resembling fungi. This little guy is an obligate anaerobe. Hope this helps!
What are the characteristics of adult metachromatic leukodystrophy?
Adult metachromatic leukodystrophy is characterized by emotional disturbances and psychiatric symptoms. Disorders of movement and posture appear later. Dementia and decreased visual function also occur.
What is the function of glycogen granules in bacteria?
Our bodies way of storing carbohydrates.
What kind of inherited condition is Metachromatic leukodystrophy?
Metachromatic leukodystrophy (MLD), also called sulfatide lipidosis and arylsulfatase A (ARSA) deficiency, is inherited as an autosomal recessive trait, due to mutations in the arylsulfatase A (ARSA) gene
