
Nissl bodies found in neurons are-
A) Made of DNA
B) Masses of ribosome and RER
C) Help information on neurofibrils.
D) Masses of mitochondria.
Answer
511.2k+ views
Hint: Nissl bodies found in the cell body of the neurons are granules of rough endoplasmic reticulum (RER) with rosettes of free ribosomes.
The main function of Nissl bodies within neurons is to aid in the production and dispersal of chemical substances such as protein and peptides.
Complete Answer:
- A Nissl body is a large granular body found in neurons. These granules are of rough endoplasmic reticulum (RER) with rosettes of free ribosomes.
- And are the site of protein synthesis. Nissl bodies can be demonstrated by Nissl staining. Using an aniline stain to label extranuclear RNA granules. This staining method is useful to localize the cell body, as it can be seen in the soma and dendrites of neurons, though not in the axon or axon hillock. Due to RNA’s basophilic (“base-loving”) properties, it is stained blue by this method.
- Nissl bodies show changes under various physiological conditions and in pathological conditions, they may dissolve and disappear (chromatolysis). The ultrastructure of the Nissl body suggests they are primarily concerned with the synthesis of proteins for intracellular use.
- As Nissl bodies are made up of rough endoplasmic reticulum with plenty of ribosomes so their nature can be said as proteinaceous materials in pyramidal cells and nectar neurons, cells with long axons and distant terminals to maintain.
The correct answer is- (B) Masses of ribosome and RER.
Note: In living neurons, they are visible in phase contrast microscopy, the Nissl body represents the protein synthetic machinery of the cell. That shows Nissl substance is the granular or rough-surfaced endoplasmic reticulum (RER) found in other cells, especially those that synthesize protein in large amounts.
The main function of Nissl bodies within neurons is to aid in the production and dispersal of chemical substances such as protein and peptides.
Complete Answer:
- A Nissl body is a large granular body found in neurons. These granules are of rough endoplasmic reticulum (RER) with rosettes of free ribosomes.
- And are the site of protein synthesis. Nissl bodies can be demonstrated by Nissl staining. Using an aniline stain to label extranuclear RNA granules. This staining method is useful to localize the cell body, as it can be seen in the soma and dendrites of neurons, though not in the axon or axon hillock. Due to RNA’s basophilic (“base-loving”) properties, it is stained blue by this method.
- Nissl bodies show changes under various physiological conditions and in pathological conditions, they may dissolve and disappear (chromatolysis). The ultrastructure of the Nissl body suggests they are primarily concerned with the synthesis of proteins for intracellular use.
- As Nissl bodies are made up of rough endoplasmic reticulum with plenty of ribosomes so their nature can be said as proteinaceous materials in pyramidal cells and nectar neurons, cells with long axons and distant terminals to maintain.
The correct answer is- (B) Masses of ribosome and RER.
Note: In living neurons, they are visible in phase contrast microscopy, the Nissl body represents the protein synthetic machinery of the cell. That shows Nissl substance is the granular or rough-surfaced endoplasmic reticulum (RER) found in other cells, especially those that synthesize protein in large amounts.
Recently Updated Pages
Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Trending doubts
Difference Between Prokaryotic Cells and Eukaryotic Cells

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

1 Quintal is equal to a 110 kg b 10 kg c 100kg d 1000 class 11 physics CBSE

Net gain of ATP in glycolysis a 6 b 2 c 4 d 8 class 11 biology CBSE

Give two reasons to justify a Water at room temperature class 11 chemistry CBSE
