When cells are ground or homogenized, the cell membranes break up into fragments, which round off to form bodies called
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Biology GK · all questionsCell Biology
Cell Biology
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Match List I (Chromosome models) with List II (Discoverers) and choose the correct answer:
| List-I | List-II |
| a. Simple multi-stranded model | 1. DuPraw |
| b. Centipede model | 2. Nebel |
| c. Coiled coil model | 3. Steffensen |
| d. Folded fibre model | 4. Taylor |
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Consider the following statements regarding cell inclusions and choose the correct answer:
1. Starch grains occur in plant cells only, particularly in storage organs such as rhizomes and tubers
2. Aleurone grains contain stored proteins in plant cells
3. Crystals of various chemical compounds occur in plant cells
1. Starch grains occur in plant cells only, particularly in storage organs such as rhizomes and tubers
2. Aleurone grains contain stored proteins in plant cells
3. Crystals of various chemical compounds occur in plant cells
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The synaptonemal complexes mostly disappear during
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What is a tonoplast?
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Which of the following, when blocks protein synthesis after mixing light and heavy ribsomes, no hybrids are formed?
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The chromosomes move towards the equator of the spindle in which of the following phases?
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The term 'Meiosis' was coined by
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In plant cells, the turgidity and rigidity is provided by
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Identify the cell that is amoeboid in shape.
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The structures present in chromosome include
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Period between two cell divisions is known as
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How many cells and meiosis are needed to produce 200 cells?
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Which one of the following elements is present in the green pigment of leaves?
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Chromosomes bearing satellites are called SAT-chromosomes, where SAT stands for
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The smallest known prokaryotic organism is
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The cell wall is interrupted by narrow pores carrying fine strands of cytoplasm, which interlink the contents of the cells, are called
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DNA is mainly found in the following organelles
1. Mitochondria
2. Chloroplasts
3. Peroixsomes
4. Nucleus
Which of the statements given above is/are correct?
1. Mitochondria
2. Chloroplasts
3. Peroixsomes
4. Nucleus
Which of the statements given above is/are correct?
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Which of the following cell organelles are present only in plant cell?
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The principal functions of the cell wall include
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