Acid hydrolases are found in a single membrane bound organelle called:
1. Glyoxysome | 2. Lysosome |
3. Peroxisome | 4. Ribosome |
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A single membrane, tonoplast, binds the:
1. Inclusion bodies | 2. Polysomes |
3. Vacuoles | 4. Lysosomes |
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Which of the following organelles in a eukaryotic cell can only be seen after staining with vital dye?
1. Mitochondria | 2. Chloroplasts |
3. Nucleus | 4. Endoplasmic reticulum |
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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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The types of plastids that store oils and fats are:
1. Leucoplasts | 2. Amyloplasts |
3. Elaioplasts | 4. Aleuroplasts |
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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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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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Nucleoprotein fibers in the interphase nucleus called chromatin contain all the following except:
1. | DNA | 2. | Basic histones |
3. | RNA | 4. | Acidic histones |
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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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The number of correct statements amongst the given statements would be:
I: | The outer nuclear membrane is usually continuous with ER and also bears ribosomes |
II: | Nuclear pores allow movement of RNA and proteins in both directions between nucleus and cytoplasm |
III: | Satellite chromosomes have non-staining secondary constrictions at constant locations |
IV: | Microbodies are membrane bound vesicles containing various enzymes and are present in both plant and animal cells |
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
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