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Which of the following statements about cells and their functions are correct?
(i) The nucleus controls most of the activities of the cell.
(ii) The cell membrane is selectively permeable.
(iii) Mitochondria are responsible for protein synthesis.
(iv) Ribosomes are known as the powerhouse of the cell.
(v) Chloroplasts are found in animal cells.
(i) The nucleus controls most of the activities of the cell.
(ii) The cell membrane is selectively permeable.
(iii) Mitochondria are responsible for protein synthesis.
(iv) Ribosomes are known as the powerhouse of the cell.
(v) Chloroplasts are found in animal cells.
- a)(i) and (ii) only
- b)(i), (ii), and (iii) only
- c)(iii) and (iv) only
- d)(i), (ii), and (v) only
Correct answer is option 'A'. Can you explain this answer?
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Which of the following statements about cells and their functions are ...
The nucleus controls most of the cell's activities (i), and the cell membrane is selectively permeable (ii). Mitochondria are responsible for energy production, not protein synthesis. Ribosomes are involved in protein synthesis, not energy production. Chloroplasts are found in plant cells, not animal cells.
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Which of the following statements about cells and their functions are ...
Correct Statements About Cells
The correct answer is option 'A', which includes the statements (i) and (ii). Let’s break down each statement for clarity.
(i) The nucleus controls most of the activities of the cell.
- True: The nucleus is often referred to as the control center of the cell. It contains the genetic material (DNA) that regulates cell functions and activities, including growth, metabolism, and reproduction.
(ii) The cell membrane is selectively permeable.
- True: The cell membrane controls the movement of substances into and out of the cell. It allows certain molecules to pass while restricting others, thus maintaining the internal environment of the cell.
(iii) Mitochondria are responsible for protein synthesis.
- False: Mitochondria are known as the "powerhouses of the cell" because they produce energy (ATP) through cellular respiration, not protein synthesis. Protein synthesis occurs primarily at ribosomes.
(iv) Ribosomes are known as the powerhouse of the cell.
- False: Ribosomes are the sites of protein synthesis in the cell. They translate messenger RNA (mRNA) into proteins, but they are not considered the powerhouse.
(v) Chloroplasts are found in animal cells.
- False: Chloroplasts are primarily found in plant cells and are responsible for photosynthesis. Animal cells do not have chloroplasts.
In conclusion, only statements (i) and (ii) are correct, thus confirming that option 'A' is the right choice.
The correct answer is option 'A', which includes the statements (i) and (ii). Let’s break down each statement for clarity.
(i) The nucleus controls most of the activities of the cell.
- True: The nucleus is often referred to as the control center of the cell. It contains the genetic material (DNA) that regulates cell functions and activities, including growth, metabolism, and reproduction.
(ii) The cell membrane is selectively permeable.
- True: The cell membrane controls the movement of substances into and out of the cell. It allows certain molecules to pass while restricting others, thus maintaining the internal environment of the cell.
(iii) Mitochondria are responsible for protein synthesis.
- False: Mitochondria are known as the "powerhouses of the cell" because they produce energy (ATP) through cellular respiration, not protein synthesis. Protein synthesis occurs primarily at ribosomes.
(iv) Ribosomes are known as the powerhouse of the cell.
- False: Ribosomes are the sites of protein synthesis in the cell. They translate messenger RNA (mRNA) into proteins, but they are not considered the powerhouse.
(v) Chloroplasts are found in animal cells.
- False: Chloroplasts are primarily found in plant cells and are responsible for photosynthesis. Animal cells do not have chloroplasts.
In conclusion, only statements (i) and (ii) are correct, thus confirming that option 'A' is the right choice.
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Which of the following statements about cells and their functions are correct?(i) The nucleus controls most of the activities of the cell.(ii) The cell membrane is selectively permeable.(iii) Mitochondria are responsible for protein synthesis.(iv) Ribosomes are known as the powerhouse of the cell.(v) Chloroplasts are found in animal cells.a)(i) and (ii) onlyb)(i), (ii), and (iii) onlyc)(iii) and (iv) onlyd)(i), (ii), and (v) onlyCorrect answer is option 'A'. Can you explain this answer?
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Which of the following statements about cells and their functions are correct?(i) The nucleus controls most of the activities of the cell.(ii) The cell membrane is selectively permeable.(iii) Mitochondria are responsible for protein synthesis.(iv) Ribosomes are known as the powerhouse of the cell.(v) Chloroplasts are found in animal cells.a)(i) and (ii) onlyb)(i), (ii), and (iii) onlyc)(iii) and (iv) onlyd)(i), (ii), and (v) onlyCorrect answer is option 'A'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Which of the following statements about cells and their functions are correct?(i) The nucleus controls most of the activities of the cell.(ii) The cell membrane is selectively permeable.(iii) Mitochondria are responsible for protein synthesis.(iv) Ribosomes are known as the powerhouse of the cell.(v) Chloroplasts are found in animal cells.a)(i) and (ii) onlyb)(i), (ii), and (iii) onlyc)(iii) and (iv) onlyd)(i), (ii), and (v) onlyCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements about cells and their functions are correct?(i) The nucleus controls most of the activities of the cell.(ii) The cell membrane is selectively permeable.(iii) Mitochondria are responsible for protein synthesis.(iv) Ribosomes are known as the powerhouse of the cell.(v) Chloroplasts are found in animal cells.a)(i) and (ii) onlyb)(i), (ii), and (iii) onlyc)(iii) and (iv) onlyd)(i), (ii), and (v) onlyCorrect answer is option 'A'. Can you explain this answer?.
Which of the following statements about cells and their functions are correct?(i) The nucleus controls most of the activities of the cell.(ii) The cell membrane is selectively permeable.(iii) Mitochondria are responsible for protein synthesis.(iv) Ribosomes are known as the powerhouse of the cell.(v) Chloroplasts are found in animal cells.a)(i) and (ii) onlyb)(i), (ii), and (iii) onlyc)(iii) and (iv) onlyd)(i), (ii), and (v) onlyCorrect answer is option 'A'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Which of the following statements about cells and their functions are correct?(i) The nucleus controls most of the activities of the cell.(ii) The cell membrane is selectively permeable.(iii) Mitochondria are responsible for protein synthesis.(iv) Ribosomes are known as the powerhouse of the cell.(v) Chloroplasts are found in animal cells.a)(i) and (ii) onlyb)(i), (ii), and (iii) onlyc)(iii) and (iv) onlyd)(i), (ii), and (v) onlyCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements about cells and their functions are correct?(i) The nucleus controls most of the activities of the cell.(ii) The cell membrane is selectively permeable.(iii) Mitochondria are responsible for protein synthesis.(iv) Ribosomes are known as the powerhouse of the cell.(v) Chloroplasts are found in animal cells.a)(i) and (ii) onlyb)(i), (ii), and (iii) onlyc)(iii) and (iv) onlyd)(i), (ii), and (v) onlyCorrect answer is option 'A'. Can you explain this answer?.
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