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Most of the substances in the living world are transported across the cell membrane by the process of
- a)Diffusion
- b)Endocytosis
- c)Separation
- d)Plasmolysis
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Most of the substances in the living world are transported across the ...
Diffusion is a process of spontaneous movement of substances from a region of high concentration to a region of low concentration.
This question is part of UPSC exam. View all Class 9 courses
Most Upvoted Answer
Most of the substances in the living world are transported across the ...
Transport across the Cell Membrane by Osmosis
Osmosis is a type of passive transport in which water molecules move from an area of high concentration to an area of low concentration through a selectively permeable membrane. This process is crucial for the survival of living organisms as it helps in maintaining the balance of water and other substances inside and outside the cell.
Factors Affecting Osmosis
Osmosis is influenced by several factors, including:
Concentration gradient: The difference in concentration of solutes on either side of the membrane affects the movement of water molecules.
Membrane permeability: The permeability of the membrane determines the rate of osmosis.
Surface area: The larger the surface area of the membrane, the faster the rate of osmosis.
Temperature: Higher temperatures increase the rate of osmosis.
Types of Solutions
Based on the concentration of solutes, solutions can be classified into three types:
Hypertonic solution: A solution with a higher concentration of solutes than the cell. In this type of solution, water moves out of the cell, causing it to shrink.
Isotonic solution: A solution with the same concentration of solutes as the cell. In this type of solution, there is no net movement of water molecules.
Hypotonic solution: A solution with a lower concentration of solutes than the cell. In this type of solution, water moves into the cell, causing it to swell.
Importance of Osmosis
Osmosis plays a crucial role in several biological processes, including:
Maintaining cell shape and size
Regulating blood pressure
Transporting nutrients and waste products
Maintaining the balance of fluids in the body
Conclusion
In conclusion, osmosis is an essential process that helps in maintaining the balance of water and other substances inside and outside the cell. It is a passive transport mechanism that does not require energy and is influenced by factors such as concentration gradient, membrane permeability, surface area, and temperature.
Osmosis is a type of passive transport in which water molecules move from an area of high concentration to an area of low concentration through a selectively permeable membrane. This process is crucial for the survival of living organisms as it helps in maintaining the balance of water and other substances inside and outside the cell.
Factors Affecting Osmosis
Osmosis is influenced by several factors, including:
Concentration gradient: The difference in concentration of solutes on either side of the membrane affects the movement of water molecules.
Membrane permeability: The permeability of the membrane determines the rate of osmosis.
Surface area: The larger the surface area of the membrane, the faster the rate of osmosis.
Temperature: Higher temperatures increase the rate of osmosis.
Types of Solutions
Based on the concentration of solutes, solutions can be classified into three types:
Hypertonic solution: A solution with a higher concentration of solutes than the cell. In this type of solution, water moves out of the cell, causing it to shrink.
Isotonic solution: A solution with the same concentration of solutes as the cell. In this type of solution, there is no net movement of water molecules.
Hypotonic solution: A solution with a lower concentration of solutes than the cell. In this type of solution, water moves into the cell, causing it to swell.
Importance of Osmosis
Osmosis plays a crucial role in several biological processes, including:
Maintaining cell shape and size
Regulating blood pressure
Transporting nutrients and waste products
Maintaining the balance of fluids in the body
Conclusion
In conclusion, osmosis is an essential process that helps in maintaining the balance of water and other substances inside and outside the cell. It is a passive transport mechanism that does not require energy and is influenced by factors such as concentration gradient, membrane permeability, surface area, and temperature.
Community Answer
Most of the substances in the living world are transported across the ...
Osmosis
it is the phenomenon in which water molecules move from the region of higher concentration to the region of lower concentration in semi permeable membrane
it is the phenomenon in which water molecules move from the region of higher concentration to the region of lower concentration in semi permeable membrane
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Most of the substances in the living world are transported across the cell membrane by the process ofa)Diffusionb)Endocytosisc)Separationd)PlasmolysisCorrect answer is option 'A'. Can you explain this answer?
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Most of the substances in the living world are transported across the cell membrane by the process ofa)Diffusionb)Endocytosisc)Separationd)PlasmolysisCorrect answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Most of the substances in the living world are transported across the cell membrane by the process ofa)Diffusionb)Endocytosisc)Separationd)PlasmolysisCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Most of the substances in the living world are transported across the cell membrane by the process ofa)Diffusionb)Endocytosisc)Separationd)PlasmolysisCorrect answer is option 'A'. Can you explain this answer?.
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