Q. No.1. Lysosomes
2. Vacuoles
3. Endoplasmic reticulum
4. Peroxisomes
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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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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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Spindle fibers are attached to the chromosome in the region of:
| 1. | Centrosome | 2. | Chromomere |
| 3. | Chromonema | 4. | Kinetochore |
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The component molecules of the cell membrane have two main parts, the head and the tail. These parts are either hydrophobic (repelled by water) or hydrophilic (attracted to water). Which is which?
| 1. | Hydrophilic Head and Hydrophobic Tail |
| 2. | Both Hydrophobic |
| 3. | Hydrophilic Tail and Hydrophobic Head |
| 4. | Both Hydrophilic |
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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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An important site of the formation of glycoproteins and glycolipids in a eukaryotic cell is the:
| 1. | Rough endoplasmic reticulum |
| 2. | Smooth endoplasmic reticulum |
| 3. | Golgi apparatus |
| 4. | Lysosomes |
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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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The concentrations of ions is significantly higher in the vacuoles than in the cytoplasm. The reason for this is:
| 1. | Facilitated diffusion of the ions by the tonoplast |
| 2. | Active transport of the ions by the tonoplast |
| 3. | Presence of porins for diffusion of the ions |
| 4. | Bulk transport across the tonoplast |
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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
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