Which of the following statements is true for a secretory cell?
1. | Golgi apparatus is absent |
2. | Rough Endoplasmic Reticulum (RER) is easily observed in the cell |
3. | Only Smooth Endoplasmic Reticulum (SER) is seen in the cell |
4. | Secretary granules are formed in nucleus |
Spindle fibers are attached to the chromosome in the region of:
1. | Centrosome | 2. | Chromomere |
3. | Chromonema | 4. | Kinetochore |
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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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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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A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is
1. | Absence of mitochondria | 2. | Presence of cell wall |
3. | Presence of haemoglobin | 4. | Absence of nucleus |
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When the centromere in a chromosome is located close to its end, the chromosome is called as:
1. | Metacentric | 2. | Sub-metacentric |
3. | Acrocentric | 4. | Telocentric |
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Identify the incorrect statement regarding nucleolus:
1. | Their content is continuous with nucleoplasm |
2. | It is site for active rRNA synthesis |
3. | Their number is always one per nucleus |
4. | Larger nucleoli are present in cells actively carrying out protein synthesis |
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Identify the incorrect statement regarding chloroplasts:
1. | They are double membrane bound organelles |
2. | Inner chloroplast membrane is relatively more permeable |
3. | Chlorophyll pigments are present in the thylakoids |
4. | Stroma contains enzymes required for synthesis of carbohydrates and proteins |
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The types of plastids that store oils and fats are:
1. Leucoplasts | 2. Amyloplasts |
3. Elaioplasts | 4. Aleuroplasts |
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All the following are located in the mitochondrial matrix except:
1. Single circular DNA molecule
2. Proteins of electron transport chain
3. 70 S ribosomes
4. Enzymes of Kreb’s cycle
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