Biology Cell Part 10 (Nucleus : Eukaryotes vs Prokaryotes) Class 8 VIII

TL;DR

The nucleus is a prominent structure located in the center of a cell, playing a vital role in cell division and movement.

Transcript

hello friends this video on cell part 10 is brought to you by example.com no more fear from exam so we are now going to talk about a very important component of the cell that is nucleus so what is nucleus now if you look at a cell you will always be able to notice a structure which is somewhat spherical and it is somewhat located towards the center... Read More

Key Insights

• 🌱 The nucleus is a prominent structure located in the center of a cell, regardless of whether it is an animal cell or a plant cell.
• 💠 The shape of the nucleus can vary in different cells, such as being spherical, oval, lobed, or elongated.
• 🎮 The nucleus is considered the control center of the cell because it is involved in crucial activities such as cell division, reproduction, and movement.
• ❓ Eukaryotic cells have a distinct nucleus with a nuclear membrane, while prokaryotic cells do not have a true nucleus.
• 💁 DNA, which carries genetic information, is present in the nucleus of eukaryotic cells.
• 📌 The presence of a large vacuole in plant cells can affect the location of the nucleus, pushing it towards the periphery of the cell.
• 🧑‍🔬 The discovery of the nucleus was made by scientist Robert Brown in 1831, long after the discovery of cells in the 1600s.

Questions & Answers

Q: What is the nucleus and where is it typically located in a cell?

The nucleus is a spherical or oval structure found in the center of a cell. It is present in both animal and plant cells, although its location may vary in plant cells due to the presence of a large vacuole.

Q: Can the shape of the nucleus vary in different cells?

Yes, the shape of the nucleus can vary among different cells. For example, blood cells may have a lobed nucleus, while smooth muscle cells may have an elongated nucleus.

Q: Why is the nucleus considered the control center of the cell?

The nucleus is considered the control center because it plays a central role in cell division and reproduction, as well as movement. It contains DNA, which carries genetic information and is essential for inheritance.

Q: What is the difference between eukaryotic and prokaryotic cells in terms of the nucleus?

Eukaryotic cells have a distinct nucleus with a nuclear membrane, while prokaryotic cells do not have a true nucleus. In prokaryotic cells, the genetic material is scattered within the cell.

Summary & Key Takeaways

• The nucleus is a spherical or oval structure found in both animal and plant cells, although its location may vary in plant cells due to the presence of a large vacuole.

• The shape of the nucleus can differ among different cells, such as having a lobed shape in blood cells or elongated shape in smooth muscle cells.

• Nucleus is considered the control center of the cell because it is involved in cell division and reproduction, as well as movement.