Q. No.
The structure that helps in cell wall formation, DNA replication and respiration in bacteria is :
1. Mesosome
2. Chromatophores
3. Pilus
4. Nucleoid
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Which of the following statements can explain the fact that many scientists do not consider viruses as living organisms?
| 1. | Metabolism and growth are defining properties of living organisms. |
| 2. | Anything less than a complete structure of a cell does not ensure independent living. |
| 3. | All cells arise from pre-existing cells. |
| 4. | All biochemical reactions are catalyzed by enzymes. |
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A non-membrane bound organelle found in all cells is:
| 1. | Centriole | 2. | Lysosome |
| 3. | Vacuole | 4. | Ribosome |
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Spindle fibers are attached to the chromosome in the region of:
| 1. | Centrosome | 2. | Chromomere |
| 3. | Chromonema | 4. | Kinetochore |
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Identify the appendage present on the surface of some bacterial cells that help attach them to rocks in streams and also to the host tissues:
| 1. | Flagella | 2. | Pili |
| 3. | Fimbriae | 4. | Cilia |
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Most of the functions of a cell membrane can be attributed to its:
1. Phospholipids
2. Cholesterol
3. Proteins
4. Carbohydrates
Algal cell walls are made up of:
1. Cellulose, Galactans, Mannans and Minerals
2. Cellulose, Hemicellulose, Pectins and Proteins
3. Cellulose, Pectins, Mannans and Minerals
4. Cellulose, Hemicellulose, Mannans and Pectins
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Which of the following is not considered as a part of the endo-membranous system of a eukaryotic cell?
| 1. | Lysosomes | 2. | Vacuoles |
| 3. | Endoplasmic reticulum | 4. | Peroxisomes |
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In animal cells, steroidal hormones are synthesized in the:
| 1. | Rough endoplasmic reticulum |
| 2. | Smooth endoplasmic reticulum |
| 3. | Golgi apparatus |
| 4. | Lysosomes |
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