Q. No.
Cilia and flagella in a eukaryotic cell
1.
Are motile at base
2.
Are made of 20 microtubules
3.
Are devoid of matrix and flagellar sheath
4.
Shows rotatory movement
Eukaryotic cells contain
1. 70 'S' ribosomes
2. 70 'S' and 80 'S' ribosome
3. 80 'S' ribosomes
4. 70 'S' and 60 'S' ribosomes
Choose the incorrect statement regarding cells:
| 1. | Mycoplasma, the smallest cell, is only 0.3 μm in length, while bacteria could be 3 to 5 μm. |
| 2. | Hemoglobin-associated human cells are about 7μm in diameter. |
| 3. | The shape of the cell may not vary with the function they perform. |
| 4. | Nerve cells are longest cells. |
Which of the following cell organelle is closely associated with ER & helps in formation of plasma membrane during cytokinesis?
1. Centrosome
2. Sphaerosomes
3. Golgi bodies
4. Ribosomes
The ability of proteins to move laterally within the overall bilayer lipid molecules of plasma membrane is measured as its
1. Stability
2. Thickness
3. Degree of permeability
4. Fluidity
Neutral solutes directly pass through the lipid bilayer of plasma membrane because
| 1. | Plasma membrane has special carrier for them |
| 2. | They are lipid soluble |
| 3. | They have specific hydrophilic areas for their passage |
| 4. | They consume ATP |
Find the incorrect statement
| 1. | Middle lamella is mainly made up of calcium and magnesium pectate |
| 2. | Cell wall is formed on the inner side of the cell therefore secondary wall formed first |
| 3. | Middle lamella glues the neighbouring cells together |
| 4. | Cell wall helps in cell to cell interaction and provides barrier to undesirable macromolecules |
According to fluid mosaic model of plasma membrane the quasifluid nature of
1. Protein enables lateral movement of lipids within in the overall bilayer
2. Lipid and protein enable the lateral movement of carbohydrates
3. Lipid enables lateral movement of proteins within the overall bilayer
4. Lipid enables the flip-flop movement of proteins
Cell theory formulated by Schleiden and Schwann does not explain which one of the following features?
| 1. | Organisms are composed of cells and their products |
| 2. | All cells are basically alike in their structure and metabolism |
| 3. | New cells originate from pre-existing cells |
| 4. | The function of an organism is an outcome of activities and interactions of its constituent cells |
Cilia and flagella resemble in the
1. Microtubular structure
2. Presence of basal granules
3. Mode of action
4. More than one option is correct
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