Onion Peel Cytoplasm Stain Retention
Understanding how different cell parts retain stains is crucial for microscopy.
Cytoplasm Staining in Onion Peels
When preparing a temporary mount of an onion peel, specific stains are used to enhance the visibility of cellular structures. Common stains include safranin (red) or methylene blue (blue).
- Stain Interaction: Stains primarily bind to specific molecules within cells. The nucleus, containing DNA, typically stains intensely.
- Onion Cell Structure: Onion epidermal cells are plant cells. Mature cells usually have a large central vacuole that occupies most of the cell volume.
- Cytoplasm Location: Consequently, the cytoplasm is often reduced to a thin layer pressed between the cell wall and the large vacuole.
- Observed Intensity: Due to its relatively sparse composition and peripheral location, the cytoplasm itself retains less stain compared to the nucleus. The stain may also diffuse more readily within the cytoplasm or be less attracted to its components.
This leads to the observation that the cytoplasm appears very little stained in such preparations, especially when contrasted with the more intensely stained nucleus.
Similar Questions
- Which of the following is commonly known as the Indian bee?
- Which of the following correctly describes lymph?
- Thicker muscular walls are present in the ventricles of the heart due to which of the following reasons?
- Which of the following hybridisation crossing is NOT used for the improvement in crop varieties?
- Among the following, which structure is cup shaped at one end of coiled tube in kidney?
- Transportation of water in plants takes place through ________.
- Growth hormones function:
Important Questions from Biology
Which of the following statements about living and non-living being is/are correct?
1. While living being can demonstrate growth and repair, non-living being cannot.
2. While living being demonstrates metabolic processes, non-living being does not.
Select the correct answer using the code given below.Movement of materials to different parts of cytoplasm and nucleus is generally carried out by
Which one of the following cell organelles may play a role in expelling excess water and wastes in case of unicellular organisms?
Transformation of meristematic cells into specific permanent tissues occurs by the process of
If human blood is placed in a 2% detergent solution, what will happen to the RBC?
