Podcast
Questions and Answers
Match the following with their description:
Match the following with their description:
Diffusion = Molecules move from high concentration to low concentration Osmosis = Movement of water molecules across a selectively permeable membrane Active transport = Moves molecules from low concentration to high concentration against their gradient Protein carriers = Located within the cell membrane and carry out active transport
Match the following with their role in active transport:
Match the following with their role in active transport:
Energy = Required for active transport as it goes against the natural direction Mitochondria = Provide cells with necessary energy for active transport Respiration = Energy source used for releasing substances on the high concentration side in active transport Substances = Bind to the protein carrier on the low concentration side in active transport
Match the following with their examples of active transport in cells:
Match the following with their examples of active transport in cells:
Root hair cells = Take in mineral ions from the soil using active transport Kidneys = Retain needed substances like glucose and sodium ions through active transport Cell membrane = Location of protein carriers that carry out active transport Molecules = Moved against the gradient in active transport to absorb substances from dilute solutions
Match the following with their movement characteristics:
Match the following with their movement characteristics:
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Match the following with their comparison in terms of energy requirement:
Match the following with their comparison in terms of energy requirement:
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Match the following with their function in active transport:
Match the following with their function in active transport:
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Match the following with their impact on cell structure:
Match the following with their impact on cell structure:
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Study Notes
- Active transport is a process that moves molecules from a low concentration to a high concentration against their concentration gradient.
- This is the opposite of diffusion and osmosis, where molecules move from high concentration to low concentration.
- Energy is required for active transport, as it goes against the natural direction.
- Protein carriers located within the cell membrane carry out active transport and have specific binding sites for the molecules they transport.
- Substances bind to the protein carrier on the low concentration side and are released on the high concentration side using energy from respiration.
- Active transport enables cells to absorb substances from very dilute solutions, such as root hair cells taking in mineral ions from the soil and kidneys retaining needed substances like glucose and sodium ions.
- Cells that perform a lot of active transport have many mitochondria to provide them with the necessary energy.
- In diffusion, molecules move down the concentration gradient without the need for energy, while in active transport, more effort is needed to move the substance against the gradient.
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Description
Test your knowledge about the active transport process, which moves molecules from a low concentration to a high concentration against their concentration gradient. Learn about the role of protein carriers, energy requirements, and its significance in cellular functions.