Grade 9 Exam > Grade 9 Questions > Choose the correctly matched pair.a)Chromatin...
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Choose the correctly matched pair.
- a)Chromatin material - Visible as rod-shaped structures when cell is about to divide
- b)Prokaryotes - Cells with membrane-bound organelles
- c)Nucleoid - Well-defined nuclear region with nuclear membrane
- d)Functional segments of DNA - Genes
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Choose the correctly matched pair.a)Chromatin material - Visible as ro...
- Option A: Chromatin material - Visible as rod-shaped structures when cell is about to divide
Incorrect. Chromatin material is visible as an entangled mass of thread-like structures when the cell is not dividing. It organizes into chromosomes, which are rod-shaped structures, when the cell is about to divide.
- Option B: Prokaryotes - Cells with membrane-bound organelles
Incorrect. Prokaryotes are organisms whose cells lack a nuclear membrane and most of the other membrane-bound organelles found in eukaryotic cells.
- Option C: Nucleoid - Well-defined nuclear region with nuclear membrane
Incorrect. The nucleoid is a poorly defined nuclear region in prokaryotes that lacks a nuclear membrane.
- Option D: Functional segments of DNA - Genes
Correct. Genes are the functional segments of DNA that contain the information necessary for constructing and organizing cells.
The correct answer is Option D because it accurately describes the relationship between functional segments of DNA and genes, while the other options contain inaccuracies based on the provided content.
Incorrect. Chromatin material is visible as an entangled mass of thread-like structures when the cell is not dividing. It organizes into chromosomes, which are rod-shaped structures, when the cell is about to divide.
- Option B: Prokaryotes - Cells with membrane-bound organelles
Incorrect. Prokaryotes are organisms whose cells lack a nuclear membrane and most of the other membrane-bound organelles found in eukaryotic cells.
- Option C: Nucleoid - Well-defined nuclear region with nuclear membrane
Incorrect. The nucleoid is a poorly defined nuclear region in prokaryotes that lacks a nuclear membrane.
- Option D: Functional segments of DNA - Genes
Correct. Genes are the functional segments of DNA that contain the information necessary for constructing and organizing cells.
The correct answer is Option D because it accurately describes the relationship between functional segments of DNA and genes, while the other options contain inaccuracies based on the provided content.
Most Upvoted Answer
Choose the correctly matched pair.a)Chromatin material - Visible as ro...
Understanding Functional Segments of DNA
Functional segments of DNA, known as genes, play a crucial role in the biology of living organisms. Here’s a detailed explanation of why option D is the correct match:
What are Genes?
- Genes are segments of DNA that contain instructions for building proteins and regulating various cellular functions.
- Each gene is responsible for a specific trait or function, such as eye color or enzyme production.
Structure of DNA
- DNA is composed of two long strands forming a double helix, made up of nucleotides.
- Each nucleotide consists of a sugar, phosphate group, and a nitrogenous base. The sequence of these bases determines the genetic information.
Gene Functionality
- Genes are expressed to produce proteins through two main processes: transcription and translation.
- During transcription, the DNA sequence of a gene is copied to produce messenger RNA (mRNA).
- In translation, the mRNA is read by ribosomes to synthesize proteins.
Significance of Genes
- Genes are essential for growth, development, and functioning of all living organisms.
- They are the basis of heredity, allowing traits to be passed from one generation to the next.
Conclusion
In summary, option D is correct because genes are indeed the functional segments of DNA that carry the necessary information for the development and functioning of an organism. Understanding genes is fundamental to genetics and molecular biology, highlighting their importance in life sciences.
Functional segments of DNA, known as genes, play a crucial role in the biology of living organisms. Here’s a detailed explanation of why option D is the correct match:
What are Genes?
- Genes are segments of DNA that contain instructions for building proteins and regulating various cellular functions.
- Each gene is responsible for a specific trait or function, such as eye color or enzyme production.
Structure of DNA
- DNA is composed of two long strands forming a double helix, made up of nucleotides.
- Each nucleotide consists of a sugar, phosphate group, and a nitrogenous base. The sequence of these bases determines the genetic information.
Gene Functionality
- Genes are expressed to produce proteins through two main processes: transcription and translation.
- During transcription, the DNA sequence of a gene is copied to produce messenger RNA (mRNA).
- In translation, the mRNA is read by ribosomes to synthesize proteins.
Significance of Genes
- Genes are essential for growth, development, and functioning of all living organisms.
- They are the basis of heredity, allowing traits to be passed from one generation to the next.
Conclusion
In summary, option D is correct because genes are indeed the functional segments of DNA that carry the necessary information for the development and functioning of an organism. Understanding genes is fundamental to genetics and molecular biology, highlighting their importance in life sciences.
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Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer? for Grade 9 2025 is part of Grade 9 preparation. The Question and answers have been prepared according to the Grade 9 exam syllabus. Information about Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Grade 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer?.
Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer? for Grade 9 2025 is part of Grade 9 preparation. The Question and answers have been prepared according to the Grade 9 exam syllabus. Information about Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Grade 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer?.
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Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Choose the correctly matched pair.a)Chromatin material - Visible as rod-shaped structures when cell is about to divideb)Prokaryotes - Cells with membrane-bound organellesc)Nucleoid - Well-defined nuclear region with nuclear membraned)Functional segments of DNA - GenesCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Grade 9 tests.
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