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What is the act of molecules crossing a membrane?

passive or active transport


What ways of moving molecules across a membrane requires energy?

Active transport requires energy to move molecules across a membrane against their concentration gradient. This process is facilitated by specific carrier proteins embedded in the membrane that use energy, usually in the form of ATP, to transport molecules.


What is it called when molecules uses energy to move across a semipermeable membrane?

Active transport


How does facilitated transport differ from active transport in terms of the energy requirements and mechanisms involved in moving molecules across a cell membrane?

Facilitated transport and active transport are two ways molecules can move across a cell membrane. Facilitated transport does not require energy from the cell, while active transport does require energy in the form of ATP. Facilitated transport uses carrier proteins to help molecules move across the membrane, while active transport uses pumps to move molecules against their concentration gradient.


Which type of membrane transport process uses ATP as a source of energy?

Active transport processes use ATP as a source of energy to move molecules against their concentration gradient across a cell membrane. This process requires specific transport proteins, such as ion pumps, to actively transport molecules across the membrane.


What type of molecules embebbed in the plasma membrane allows molecules to pass through the membrane by active or passive transport?

proteins


What assists the movement of polar molecules across the membrane A. Passive Transport B. Active Transport?

Polar molecules must pass through the membrane via active transport. This is because the cellular membrane is mostly nonpolar, and polar and nonpolar molecules repel each other. Only nonpolar molecule (i.e. hormones) can pass through the membrane without active transportation.


When the cell itself plays an active role in the passing of molecules through its membrane?

active transport


What is the movement of molecules through a cell membrane requiring energy?

active transport


What particles move through cell membrane between phospholipid molecules What transport?

Osmosis, Passive Transport, and Active Transport


What is the difference between active and facilitated transport in cellular processes?

Active transport requires energy to move molecules across the cell membrane, while facilitated transport uses carrier proteins to help molecules pass through the membrane without energy.


Can polar molecules cross the cell membrane?

Yes, polar molecules can cross the cell membrane through facilitated diffusion or active transport.