Assertion (A): | Some infections with gram-negative bacteria can lead to life-threatening septic shock. |
Reason (R): | Lipopolysaccharide layer in gram-negative bacteria can trigger an innate immune response. |
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. | Both (A) and (R) are False. |
Assertion (A): | The membranes of chloroplasts and mitochondria are not included in the endomembrane system of a eukaryotic cell. |
Reason (R): | The presence of chloroplasts and mitochondria in eukaryotic cells is explained by endosymbiosis. |
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. | Both (A) and (R) are false. |
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
1. | Arrangement of axonemal microtubules in cilia and flagella is described as 9 + 2 |
2. | Arrangement of microtubules in centriole is described as 9 + 0 |
3. | Centrosome is involved in spindle formation in plant cell division |
4. | Centrioles form the basal body of cilia and flagella |
1. | Only I | 2. | Only II |
3. | Only II and III | 4. | Only III |
1. | Linus Pauling | Discovered the triple helix structure of collagen |
2. | Rudolf Virchow | Omnis cellula-e-cellula |
3. | Singer and Nicholson | Fluid mosaic model |
4. | Georges Palade | First observed ribosome |
1. | Lysosomes | Acid hydrolases |
2. | Tonoplast | Membrane of vacuole |
3. | Amyloplasts | Store oils and fats |
4. | Golgi apparatus | Synthesis of glycoproteins and glycolipids |
1. | presence of ribosomes |
2. | arising from pre-existing cells |
3. | compartmentalization through membrane bound organelles |
4. | presence of a cell membrane |
1. | Golgi apparatus | Formation of glycoproteins and glycolipids |
2. | Rough ER | Synthesis of steroidal hormones in animal cells |
3. | Lysosomes | Carry acid hydrolases |
4. | Nucelolus | Site for active rRNA synthesis |