Question

below are animal cells placed in beakers of various concentrations. 1. draw an arrow to show which way the water would move by osmosis 2. fill in any missing percentages (water or solute) 3. identify the type of solution (isotonic, hypertonic, or hypotonic) 1. if an animal cell is placed in distilled water, it will swell and burst. explain the process that occurred and what caused the cell to burst. 2. movement across the cell membrane that does not require energy is called active / passive transport. 3. passive transport moves substances down their concentration gradient with / without using the cells energy.

Explanation:

Step1: Analyze osmosis in animal - cell in distilled water

Distilled water has a very high water - concentration. Animal cells have solutes inside them. Water moves from an area of high water - concentration (distilled water) to an area of low water - concentration (inside the cell) by osmosis.

Step2: Explain cell bursting

As water continuously enters the cell, the cell swells. Animal cells do not have a cell wall to provide structural support, so the cell eventually bursts due to the excessive influx of water.

Step3: Answer membrane transport questions

Movement across the cell membrane that does not require energy is passive transport. Passive transport moves substances down their concentration gradient without using the cell's energy.

Answer:

1. When an animal cell is placed in distilled water, water moves into the cell by osmosis because the water - concentration outside (in distilled water) is higher than inside the cell. Since animal cells lack a cell wall, the continuous influx of water causes the cell to swell and eventually burst.
2. passive
3. without