I: | The main chromosomal DNA is linear |
II: | Plasmid DNA is circular |
1. | Peptidoglycan cell wall | 2. | Main chromosomal DNA |
3. | Plasmid DNA | 4. | Satellite DNA |
1. | inclusion bodies | 2. | carboxysomes |
3. | magnetosomes | 4. | chromatophores |
I: | Plant cells possess cell walls, plastids and a large central vacuole which are absent in animal cells. |
II: | Animal cells have centrioles which are absent in almost all plant cells. |
1. | simple diffusion | 2. | facilitated diffusion |
3. | osmosis | 4. | active transport |
I: | A non-living rigid structure called the cell wall forms an outer covering for the plasma membrane of fungi and plants. |
II: | Cell wall not only gives shape to the cell and protects the cell from mechanical damage and infection, it also helps in cell-to-cell interaction and provides barrier to undesirable macromolecules. |
III: | Algae have cell wall, made of cellulose, galactans, mannans and minerals like calcium carbonate, while in other plants it consists of cellulose, hemicellulose, pectins and proteins. |
IV: | The cell wall of a young plant cell, the primary wall is capable of growth. |
V: | The secondary wall is formed on the outer (towards middle lamella) side of the cell. |
1. | Lysosomes | 2. | Golgi Apparatus |
3. | Vacuole | 4. | Mitochondria |
1. | cytoskeleton | 2. | MTOC |
3. | Contractile elements | 4. | vimentin |
1. | Centrosome is an organelle usually containing two cylindrical structures called centrioles. |
2. | Both the centrioles in a centrosome lie parallel to each other in which each has an organisation like the cartwheel. |
3. | Centrioles are made up of nine evenly spaced peripheral fibrils of tubulin protein where each of the peripheral fibril is a triplet. |
4. | The central part of the proximal region of the centriole is also proteinaceous and called the hub. |
Statement I: | The outer nuclear membrane usually remains continuous with the endoplasmic reticulum and also bears ribosomes on it. |
Statement II: | Nuclear pores are the passages through which movement of RNA from nucleus to the cytoplasm and protein molecules from the cytoplasm to the nucleus takes place. |
1. | Statement I is correct; Statement II is correct |
2. | Statement I is correct; Statement II is incorrect |
3. | Statement I is incorrect; Statement II is correct |
4. | Statement I is incorrect; Statement II is incorrect |