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Nucleus: Nucleolus, Nuclear Membrane & Chromatin Video Lecture - NEET
FAQs on Nucleus: Nucleolus, Nuclear Membrane & Chromatin Video Lecture - NEET
| 1. What is the function of the nucleolus? |  |
Ans. The nucleolus is responsible for the production and assembly of ribosomes, which are essential for protein synthesis in cells.
| 2. What is the nuclear membrane? | |
Ans. The nuclear membrane, also known as the nuclear envelope, is a double-layered membrane that surrounds the nucleus of a cell. It acts as a barrier, controlling the movement of molecules in and out of the nucleus.
| 3. What is chromatin? | |
Ans. Chromatin is a complex of DNA, proteins, and RNA molecules found within the nucleus of a cell. It is the material from which chromosomes are formed and plays a crucial role in gene regulation and DNA packaging.
| 4. How does the nucleolus function in protein synthesis? | |
Ans. The nucleolus assembles ribosomes, which are responsible for protein synthesis. It produces and processes ribosomal RNA (rRNA), combines it with proteins, and forms ribosomal subunits. These subunits then exit the nucleus and join together in the cytoplasm to form functional ribosomes.
| 5. What is the significance of the nuclear membrane in cellular processes? | |
Ans. The nuclear membrane acts as a barrier between the nucleus and the cytoplasm, controlling the transport of molecules in and out of the nucleus. It helps to maintain the integrity and organization of the genetic material within the nucleus and plays a crucial role in regulating gene expression and DNA replication.
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