Active Transport Process Quiz

Questions and Answers

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:

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:

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:

Diffusion = Molecules move down the concentration gradient without need for energy Active transport = More effort needed to move substances against the gradient Osmosis = Movement of water molecules across a selectively permeable membrane due to concentration difference Protein carriers = Have specific binding sites for the molecules they transport in active transport Signup and view all the answers

Match the following with their comparison in terms of energy requirement:

Diffusion = Does not require energy for movement down the concentration gradient Osmosis = Movement of water molecules across a selectively permeable membrane without energy requirement Active transport = Requires energy to move molecules against their concentration gradient Respiration = Energy source used for releasing substances on the high concentration side in active transport Signup and view all the answers

Match the following with their function in active transport:

Root hair cells = Take in mineral ions from very dilute solutions using active transport Mitochondria = Provide cells with necessary energy for carrying out active transport Protein carriers = Located within the cell membrane and responsible for carrying out active transport Diffusion = Involves movement of molecules down the concentration gradient without requiring energy Signup and view all the answers

Match the following with their impact on cell structure:

Active transport = Enables cells to absorb substances from very dilute solutions Diffusion = Involves movement of molecules without significant impact on cell structure Osmosis = Results in movement of water across a selectively permeable membrane impacting cell volume and pressure Mitochondria = Increase in number to provide cells with necessary energy for carrying out active transport Signup and view all the answers

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.