Active and Passive Transport

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The main difference between active and passive transport is that active transport requires and passive transport uses .

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Which of the following substances cross the plasma membrane by passive transport? Check all that apply.

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Diffusion is a form of ( passive, active ) transport, requiring no ( ATP, energy, heat, concentration gradient ). It involves the movement of molecules from an area of ( high, low ) concentration, across a ( partially permeable, permeable, biological ) membrane, to an area of ( low, high ) concentration. In other words, ( down, up ) the ( concentration gradient, concentration, concentration amount, membrane ). The rate of diffusion depends on factors such as ( size, shape, energy content ) of molecule, ( steepness, presence, diffusion ) of concentration gradient, ( temperature, pH, light intensity ), surface area, and diffusion ( distance, barrier, membrane ).

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When transport requires no ATP, involves movement down a concentration gradient, and requires the aid of a transmembrane protein which changes conformation, this is a form of passive transport.

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Osmosis is another word for diffusion.

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Instead of talking about "water concentration", we normally refer to " ", which is the of water molecules to from one to another. Pure water has a water potential of (in digits) .

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Water moves in and out of cells by ( osmosis, facilitated diffusion, active transport, co-transporters ). A plant cell with lots of water in it is ( turgid, cytolysed, plasmolysed, crenated ), while ( cytolysis, crenation, plasmolysis, flaccidity ) can be caused by too much water inside an animal cell. ( Plasmolysis, Cytolysis, Excess alkalinity, Crenation ) occurs in plant cells when there is a ( low, high ) water potential in the cell and the cell membrane is ( drawn inwards, burst, damaged, irreversibly stretched ). ( Crenation, Osmosis, Cytolysis, Plasmolysis ) describes the shrinking of an animal cell with ( low, high ) internal water potential.

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Which of the following statements are TRUE about active transport? Check all that apply.

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Which of the following molecules are transport by bulk transport?

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Phagocytosis describes a process where a cell ( ingests, digests, expels, synthesises ) a foreign particle, usually one that is quite ( large, small ). First, the cell changes shape and ( engulfs, concentrates, vesiculates ) the foreign particle. Then, parts of the cell surface membrane at the extremes ( fuse together, separate, open up ) and form a ( vesicle, lytic enzyme, phagocyte ) around the foreign particle. Cells capable of this process are ( phagocytic, exocytic, white blood cells, red blood cells ). This is ( an active, a passive ) process.

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Why is ATP needed for active transport and bulk transport? Check all that apply.

(Biological Membranes) Biology Test sobre Active and Passive Transport, creado por Daniel Brand el 05/03/2017.

Active and Passive Transport

The main difference between active and passive transport is that active transport requires and passive transport uses .

Which of the following substances cross the plasma membrane by passive transport? Check all that apply.

When transport requires no ATP, involves movement down a concentration gradient, and requires the aid of a transmembrane protein which changes conformation, this is a form of passive transport.

Osmosis is another word for diffusion.

Instead of talking about "water concentration", we normally refer to " ", which is the of water molecules to from one to another. Pure water has a water potential of (in digits) .

Which of the following statements are TRUE about active transport? Check all that apply.

Which of the following molecules are transport by bulk transport?

Why is ATP needed for active transport and bulk transport? Check all that apply.