1. State the functions of Ribosome.
2. Name two unicellular organisms.
3. Why is nucleus called controller or brain of the cell?
4. Why does plant cell possess large sized vacuoles?
5. Explain three functions of vacuoles.
6. Write three difference between Leucoplast and chromoplast.
7. Difference between plasma membrane and cell wall.
8. What is DNA? Where is it present?
9. How does an Amoeba obtain its food?
10. What is osmosis?
11. Difference between animal cell and plant cell.
12. Which organelle is known as power house of cell?
13. Difference between prokaryotic cell and eukaryotic cell.
14. What is cell?
15. What is tissue?
pls tell the answers.
Answers
Answer:
1.Ribosomes have two main functions — decoding the message and the formation of peptide bonds.
2.prokaryotic organisms and eukaryotic organisms
3.The nucleus is called the "brain" of the cell because it holds the information needed to conduct most of the cell's functions.
4.They might store food, water and any variety of nutrients that plant cell might need to survive.
5.The vacuole in cells have three main functions which are to provide the plant with support or rigidity, a storage area for nutrients and waste matter and can decompose complex molecules, according to British Society for Cell Biology.
6.-leucoplasts are not responsible for attracting animals, chromoplasts are responsible for attracting animals, facilitating pollination and fertilization.
- leucoplasts can transform into other types of plastids while chromoplast cannot transform into other types of plastids.
- Leucoplasts store nutrients including starch, fat, and proteins while chromoplasts are responsible for the synthesis and storage of pigments.
7.Plasma membrane-It is present in all types of cells.
Cell wall-It is present in the plant cell, bacteria, fungi, and algae.
8.DNA also known as deoxyribonucleic acid, is the molecule located in cell nucleus.
9.Amoeba takes in food using temporary finger-like extensions of the cell surface, which fuse over the food particle forming a food vacuole.
10.Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration.
11.Plant cells usually have one or more large vacuole(s), while animal cells have smaller vacuoles.
12.Mitochondria