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Consider the following statements with reference to Prokaryotic and eukaryotic cells:
1. In Prokaryotic cells, there is a well- defined nucleus and membrane-bound organelles.
2. In Eukaryotic cells, there is no well- defined nucleus and organelles are absent.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'D'. Can you explain this answer?
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Consider the following statements with reference to Prokaryotic and e...
The prokaryotic cells are represented by bacteria, blue-green algae, mycoplasma and PPLO (Pleuro Pneumonia Like Organisms). They are generally smaller and multiply more rapidly than the eukaryotic cells.
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Prokaryotes have a cell wall surrounding the cell membrane except in mycoplasma. The fluid matrix filling the cell is the cytoplasm. There is no well-defined nucleus. The genetic material is basically naked, not enveloped by a nuclear membrane. In addition to the genomic DNA (single chromosome/circular DNA), many bacteria have small circular DNA outside the genomic DNA. This smaller DNA is called plasmids. No organelles, like the ones in eukaryotes, are found in prokaryotic cells except for ribosomes. Hence statement 1 is not correct.
The eukaryotes include all the protists, plants, animals and fungi. In eukaryotic cells, there is an extensive compartmentalisation of cytoplasm through the presence of membrane-bound organelles. Eukaryotic cells possess an organised nucleus with a nuclear envelope. Hence statement 2 is not correct. In addition, eukaryotic cells have a variety of complex locomotory and cytoskeletal structures. Their genetic material is organised into chromosomes. All eukaryotic cells are not identical. Plant and animal cells are different as the former possess cell walls, plastids and a large central vacuole which are absent in animal cells. On the other hand, animal cells have centrioles which are absent in almost all plant cells.
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Consider the following statements with reference to Prokaryotic and e...
Understanding Prokaryotic and Eukaryotic Cells
When comparing prokaryotic and eukaryotic cells, it’s essential to understand their fundamental differences. The statements provided in the question are incorrect for the following reasons:
Prokaryotic Cells: Key Features
- Prokaryotic cells lack a well-defined nucleus. Instead, their genetic material is located in a region called the nucleoid.
- They do not possess membrane-bound organelles. Functions that require compartmentalization occur in the cytoplasm or across the cell membrane.
Eukaryotic Cells: Key Features
- Eukaryotic cells have a well-defined nucleus that encases their genetic material, separating it from the cytoplasm.
- They contain membrane-bound organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus, which allow for compartmentalized cellular functions.
Conclusion
Given the definitions and characteristics of both cell types:
- Statement 1 is incorrect because prokaryotic cells do not have a well-defined nucleus or membrane-bound organelles.
- Statement 2 is also incorrect as eukaryotic cells do have a well-defined nucleus and organelles.
Thus, the correct answer is option D: Neither 1 nor 2. Understanding these distinctions is crucial in cell biology and helps clarify the complexities of life at the cellular level.
When comparing prokaryotic and eukaryotic cells, it’s essential to understand their fundamental differences. The statements provided in the question are incorrect for the following reasons:
Prokaryotic Cells: Key Features
- Prokaryotic cells lack a well-defined nucleus. Instead, their genetic material is located in a region called the nucleoid.
- They do not possess membrane-bound organelles. Functions that require compartmentalization occur in the cytoplasm or across the cell membrane.
Eukaryotic Cells: Key Features
- Eukaryotic cells have a well-defined nucleus that encases their genetic material, separating it from the cytoplasm.
- They contain membrane-bound organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus, which allow for compartmentalized cellular functions.
Conclusion
Given the definitions and characteristics of both cell types:
- Statement 1 is incorrect because prokaryotic cells do not have a well-defined nucleus or membrane-bound organelles.
- Statement 2 is also incorrect as eukaryotic cells do have a well-defined nucleus and organelles.
Thus, the correct answer is option D: Neither 1 nor 2. Understanding these distinctions is crucial in cell biology and helps clarify the complexities of life at the cellular level.
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Consider the following statements with reference to Prokaryotic and eukaryotic cells:1. In Prokaryotic cells, there is a well- defined nucleus and membrane-bound organelles.2. In Eukaryotic cells, there is no well- defined nucleus and organelles are absent.Which of the statements given above is/are correct?a) 1 onlyb) 2 onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'D'. Can you explain this answer?
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Consider the following statements with reference to Prokaryotic and eukaryotic cells:1. In Prokaryotic cells, there is a well- defined nucleus and membrane-bound organelles.2. In Eukaryotic cells, there is no well- defined nucleus and organelles are absent.Which of the statements given above is/are correct?a) 1 onlyb) 2 onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements with reference to Prokaryotic and eukaryotic cells:1. In Prokaryotic cells, there is a well- defined nucleus and membrane-bound organelles.2. In Eukaryotic cells, there is no well- defined nucleus and organelles are absent.Which of the statements given above is/are correct?a) 1 onlyb) 2 onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements with reference to Prokaryotic and eukaryotic cells:1. In Prokaryotic cells, there is a well- defined nucleus and membrane-bound organelles.2. In Eukaryotic cells, there is no well- defined nucleus and organelles are absent.Which of the statements given above is/are correct?a) 1 onlyb) 2 onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'D'. Can you explain this answer?.
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