| 1. | Mesosomes help in DNA replication and distribution to daughter cells. | 
| 2. | Gram staining is based on the difference in the composition of cell wall of different bacteria. | 
| 3. | The axonemal microtubular arrangement in prokaryotes is characterized as 9 + 2. | 
| 4. | Plasmids are extrachromosomal circular double stranded DNA molecules. | 
| I: | Middle lamella is made up of calcium pectate. | 
| II: | Primary wall is capable of growth. | 
| III: | Secondary wall is formed on the inner [towards membrane] side of the cell. | 
| Assertion (A): | The nucleus is the control centre of the cell and contains the genetic material (DNA). | 
| Reason (R): | The nucleus directs protein synthesis through messenger RNA (mRNA) molecules. | 
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). | 
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). | 
| 3. | (A) is True but (R) is False. | 
| 4. | (A) is False but (R) is True. | 
| 1. | It synthesizes proteins that regulate cellular functions. | 
| 2. | It selectively allows substances to enter and exit the cell, maintaining the internal environment. | 
| 3. | It provides structural support to maintain the shape and integrity of the cell. | 
| 4. | It stores genetic material and coordinates cell division. | 
| 1. | control the entry and exit of substances | 
| 2. | provide structural support and protection | 
| 3. | conduct photosynthesis | 
| 4. | store genetic information | 
| Column I | Column II | ||
| 1. | Chloroplast | A. | Protein synthesis | 
| 2. | Peroxisome | B. | Photosynthesis | 
| 3. | Nucleolus | C. | Detoxification | 
| 4. | Centrosome | D. | Cell division | 
| I. | All living organisms are composed of cells. | 
| II. | The cell is the basic unit of life. | 
| III. | All cells come from pre-existing cells through sexual reproduction. | 
| Column I | Column II | ||
| A | Lysosomes | P | Membrane bound organelle formed by growth and division from pre-existing organelles and/or by de novo synthesis and further maturation from the ER. | 
| B | Peroxisome | Q | Oxidative phosphorylation | 
| C | Mitochondria | R | membrane bound vesicular structures formed by the process of packaging in the Golgi apparatus | 
| D | Chloroplasts | S | Photophosphorylation | 
| A | B | C | D | |
| 1. | P | R | S | Q | 
| 2. | P | R | Q | S | 
| 3. | R | P | S | Q | 
| 4. | R | P | Q | S | 
| Statement I: | Larger and more numerous nucleoli are present in cells actively carrying out lipid synthesis. | 
| Statement II: | RER is frequently observed in the cells actively involved in protein synthesis and secretion. | 
| I: | All cells have a true nucleus. | 
| II: | There is a cell membrane around all living cells. | 
| III: | All cells have a cell wall. | 
| IV: | The cell membrane controls what the cell will look like and how it behaves. | 
| V: | The nucleus controls what passes into and out of a cell. |