Biology, 16.12.2019 04:31 dreyes439

Which cell process will move substances against a concentration gradient?

a. active transport
b. osmosis
c. diffusion
d. facilitated diffusion

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Answer from: jacqueline398

Option A) Active transport.

Explanation: Active transport - Movement of molecules or ions from a lower concentration to a region of higher concentration(against a concentration gradient), by the use of enzymes and consuming energy(ATP), hence the substances move across plasma membrane against a concentration gradient. Osmosis is the process in which molecules of the solvent passes through a semipermeable membrane(plasma membrane in case of cell) from a less concentrated solution to more concentrated one along the concentrated gradient. Energy is not required in this process and hence it is passive process. Diffusion is the movement of the molecules of a material from higher concentration to lower concentration.Facilitated diffusion is similar to diffusion, it the transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration by the help of a carrier molecule.

Result: Active transport happens against a concentration gradient.

Answer from: Quest

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.

Answer from: Quest

We can plant more trees and plants.

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Which cell process will move substances against a concentration gradient?

a. active tr...

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