Question

Как изменится пульсация сократительной вакуоли у обыкновенной амёбы при помещении её в дистиллированную воду?

Answer 1

Концентрация соли в амёбе выше, чем в дистиллированной воде, поэтому амёба разбухнет

Answer 2

Changes in Pulsation of Contractile Vacuole in Amoeba Placed in Distilled Water

When an ordinary amoeba is placed in distilled water, the pulsation of its contractile vacuole is expected to change due to the osmotic pressure differences between the amoeba's internal environment and the external distilled water.

Osmosis and Contractile Vacuole Pulsation: - Osmosis is the movement of solvent molecules (in this case, water) from an area of lower solute concentration to an area of higher solute concentration through a semi-permeable membrane. - The contractile vacuole in amoebas is responsible for regulating water content and expelling excess water to maintain osmotic balance within the cell.

Effect of Placing Amoeba in Distilled Water: - When an ordinary amoeba is placed in distilled water, which has a higher concentration of water molecules compared to the amoeba's internal environment, water will move into the amoeba through osmosis. - This influx of water into the amoeba's cell will lead to an increase in the volume of the contractile vacuole as it works to expel the excess water to prevent the cell from bursting. - As a result, the pulsation of the contractile vacuole is expected to increase in frequency as it actively expels the excess water to maintain osmotic balance within the amoeba.

Conclusion: Placing an ordinary amoeba in distilled water is likely to lead to an increase in the pulsation frequency of its contractile vacuole as it works to expel the excess water entering the cell through osmosis.