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प्रश्न
Discuss briefly the role of nucleolus in the cells actively involved in protein synthesis.
उत्तर
The role of nucleolus in the cells actively involved in protein synthesis are:
- It is the chief site of ribosomal RNA synthesis.
- It is a colloidal complex that fills the nucleus.
- It also combines rRNA with protein to produce ribosomal subunits.
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संबंधित प्रश्न
What are nuclear pores?
What is a centromere?
In a cell that is not dividing, the chromosomes are visible as a tangle of fine threads called
Chromosome having centromere in its middle is
When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred to as ______
Match List - I with List - II.
| List - I | List - II | ||
| (a) | Cristae | (i) | Primary constriction in chromosome |
| (b) | Thylakoids | (ii) | Disc-shaped sacs in Golgi apparatus |
| (c) | Centromere | (iii) | Infoldings in mitochondria |
| (d) | Cisternae | (iv) | Flattened membranous sacs in the stroma of plastids |
Choose the correct answer from the options given below.
A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is ______.
What is the feature of a metacentric chromosome?
What are histones? What are their functions?
Explain the functions of the nuclear pores.
