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2021-05-14

What does it mean if a molecule is moved against the concentration gradient Brainly?

What does it mean if a molecule is moved against the concentration gradient Brainly?

Answer Expert Verified means that the molecule is moving from a area where it is low in concentration to an area where it is high in concentration with the expenditure of energy.

What does it mean if a molecule is moved against the concentration gradient quizlet?

Transport of substances through a membrane which requires energy. Molecules move against the concentration gradient from an area of low concentration to an area of higher concentration. Endocytosis. A type of active transport which large molecules are engulfed and taken into the cell.

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What does it mean when substances move against a concentration gradient?

active transport

What three factors affect the concentration gradient?

Several factors affect the rate of diffusion of a solute including the mass of the solute, the temperature of the environment, the solvent density, and the distance traveled.

What does concentration gradient mean?

The difference in the concentration of a substance between two areas is called the concentration gradient . The bigger the difference, the steeper the concentration gradient and the faster the molecules of a substance will diffuse.

What happens if there is no concentration gradient?

In the dialysis bag experiment, sucrose and red dye molecules are? If there is no concentration gradient, a substance will not have a net movement.

What is an example of concentration gradient?

For example, a few drops of food dye in a glass of water diffuse along the concentration gradient, from where the dye exists in its highest concentration (for instance, the brightest blue or red) to where it occurs in its lowest concentration (the water is still clear).

What is the role of a concentration gradient?

The concentration gradient is an important process for understanding how particles and ions move in random motion in a solution or gas. It is the process used for particles moving from an area of higher concentration in a solution to an area of lower concentration.

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Which one of the following is against concentration gradient?

Hence, from the above, the discussion osmosis process occurs against a concentration gradient of solute.

Is osmosis facilitated diffusion?

Facilitated diffusion, also called carrier-mediated osmosis, is the movement of molecules across the cell membrane via special transport proteins that are embedded in the plasma membrane by actively taking up or excluding ions.

What are some examples of osmosis and diffusion?

Examples

  • Examples of Osmosis: Examples include red blood cells swelling up when exposed to freshwater and plant root hairs taking up water.
  • Examples of Diffusion: Examples of diffusion include the scent of perfume filling a whole room and the movement of small molecules across a cell membrane.

What is a good example of osmosis?

An example of osmosis occurs when a sugar solution and water, top, are separated by a semipermeable membrane. The solution’s large sugar molecules cannot pass through the membrane into the water. Small water molecules move through the membrane until equilibrium is established, bottom.

What are 2 examples of osmosis?

2 Answers

  • when you keep raisin in water and the raisin gets puffed.
  • Movement of salt-water in animal cell across our cell membrane.
  • Plants take water and mineral from roots with the help of Osmosis.
  • If you are there in a bath tub or in water for long your finger gets pruned. Finger skin absorbs water and gets expanded.
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What is osmosis short answer?

Osmosis is the movement of a solvent across a semipermeable membrane toward a higher concentration of solute (lower concentration of solvent). In biological systems, the solvent is typically water, but osmosis can occur in other liquids, supercritical liquids, and even gases.

What is the difference between passive and active transport?

The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport. Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration.

Is active or passive transport faster?

Active transport is a rapid process. Passive transport is a comparatively slow process.

What are the similarities and differences between passive and active transport?

Passive transport moves molecules WITH the concentration gradient (high to low), while active transport moves molecules AGAINST the concentration gradient (Low to High). They both allow the cell to maintain homeostasis by maintaining an equilibrium of subtances in and out of the cell.