Kindly help with the following questions!
1. What is cell theory?
2. What are the three main components of a cell?
3. State the differences between a plant cell and an animal cell.
4. Why do plants have big vacuoles?
5. What is the structure of a Nucleus?
6. State the function of the nucleus.
7. What is osmosis and diffusion?
8. What is Plasmolysis?
9. Write the function of the cell wall.
10. Where does plasmolysis occur?
11. What's the structure of the plasma membrane?
12. Why is the plasma membrane called a semi-permeable membrane?
13. What is the role of the crystal?
14. State the main function of the plasma membrane.
15. State the two organelles that contain their own genetic material.
16. Why are lysosomes known as "suicide-bags"?
17. State the structure of the mitochondria.
18. What's the function of the cytoplasm?
19. What are plastids?
20. What is cell division? How many types of cell-divisions exist in plants and animal cells? Explain.
21. What is mitosis?
22. If a cell is dead, what will be the condition of the plasma membrane?
Answers
Answer:
1.In biology, cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.
2.A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of miniscule but distinct structures called organelles.
3.Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane. This gives the plant cell its unique rectangular shape. Animal cells simply have a cell membrane, but no cell wall.
4.The plant has the largest vacuole than animal cells because in plant cells the larger central vacuole performs two functions, one is to store water and the other is to help the plant remain upright. ... In animal cells, vacuoles are smaller but more in number because they do not require vacuole for rigidity or pressure.
5.The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm; and the nuclear matrix (which includes the nuclear lamina), a network within the nucleus that adds mechanical support, much like the ...