General Knowledge - Biology - Discussion

Active transport is the movement of a substance against its concentration gradient (from low to high concentration). In all cells, this is usually concerned with accumulating high concentrations of molecules that the cell needs, such as ions, glucose, and amino acids. If the process uses chemical energy, such as from adenosine triphosphate (ATP), it is termed primary active transport. Secondary active transport involves the use of an electrochemical gradient. Active transport uses energy, unlike passive transport, which does not use any type of energy. Active transport is a good example of a process for which cells require energy. Examples of active transport include the uptake of glucose in the intestines in humans and the uptake of mineral ions into root hair cells of plants.

Osmosis is a kind of passive transport. It takes place down the concentration gradient. Similarly diffusion, facilitated diffusion, filtration are also kind of passive transport. The different is osmosis generally means movement of water molecule. Above they mentioned movement of cell against concentration gradient. Osmosis generally occurs in blood cells so it is correct.

No the answer is active transport because osmosis refers to movement of water molecules from higher to lower concentration and thus it is not applicable the reverse way. Hence active transport (by means of using ATP) is how plants take in nutrients from the soil when the concentration is already high in their root cells.

@Ravi.

Osmosis is the movement of water from higher concentration level to lower concentration level whereas active transport is the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

Is it like this that the cells move against concentration gradient or the solute or solvent moves against the concentration gradient ? the active transport requires energy which is not mentioned in the question ?.

I Think it is active transport because osmosis occur in fluid contents or in water but it is too different over here. Due to that I am thinking it is active transport.

I think the answer is osmosis because, it also has same features.

As active transport why don't you consider this as a answer please clarify my doubt.

Osmosis is the movement of water molecule from higher level to lower level, active transport is the movement of cell to give nutrient to plant.

Osmosis is also movement from low concentration to high then what is difference between osmosis and active transport?

Sometimes, the movement of the cell can cause the highest concentration of cell inside the metal plasma cells.