Admin Table of Contents
- 1 When a few crystals of potassium permanganate are dropped into a beaker of water the ions of the dissolving compound will?
- 2 When materials pass into and out of a cell at equal rates there is no?
- 3 What happens to potassium permanganate crystals?
- 4 What happens when potassium permanganate is heated?
- 5 What will happen if the concentration of water inside a cell is higher than the concentration of water outside a cell?
- 6 What happens when the cell membrane fails?
- 7 What happens to plants when they are deprived of water?
- 8 What happens if you water a plant with salt water?
When a few crystals of potassium permanganate are dropped into a beaker of water the ions of the dissolving compound will?
12/15/14
| Question | Answer |
|---|---|
| Diffusion occurs because of random movement of particles OR chemical energy | random movement of particles |
| When a few crystals of potassium permanganate are dropped into a beaker of water, the ions of the dissolving compound will start to diffuse OR form a polar bond | diffuse |
When materials pass into and out of a cell at equal rates there is no?
When materials pass into and out of the cell at equal rates, there is no net change in concentration inside the cell.
What will a cell do when there is a higher concentration of dissolved substances outside the cell than inside the cell?
Similarly, if there is a higher concentration of dissolved salt outside of the cell (a hypertonic environment), then H20 will diffuse “out” from the cell and the cell will dehydrate and shrink and cellular metabolism will cease.
What do you think would happen to a cell if its cell membrane lost its selectivity?
Plasma membranes must allow certain substances to enter and leave a cell, while preventing harmful material from entering and essential material from leaving. If they were to lose this selectivity, the cell would no longer be able to sustain itself, and it would be destroyed.
What happens to potassium permanganate crystals?
Potassium permanganate oxidizes iron, manganese, and hydrogen sulfide into particles. When treating water to remove iron bacteria, a solution of potassium permanganate is fed into the well.
What happens when potassium permanganate is heated?
When Potassium permanganate is heated it turns to Potassium manganate, manganese dioxide and oxygen gas.
When materials pass into and out of a cell?
Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane. Gas exchange in gills and lungs operates by this process. Carbon dioxide is produced by all cells as a result of cellular metabolic processes.
How do materials move in and out of plant cells and animals cells?
Substances move in and out of cells by diffusion down a concentration gradient, through a partially permeable membrane. Osmosis is a type of diffusion but refers only to the movement of water molecules. Uncontrolled osmosis into an animal cell can cause the cell’s death.
What will happen if the concentration of water inside a cell is higher than the concentration of water outside a cell?
Water molecules move into and out of the cell at an equal rate, so the cell’s size remains constant. This means water concentration is higher inside the cell than outside. Thus, water flows out of the cell, causing it to shrivel or even die.
What happens when the cell membrane fails?
If one of these membranes didn’t exist the cell would be vulnerable. It would be susceptible to germs and disease. Without the nuclear membrane the cell would collapse and die. Without the cell membrane, any chemical would be allowed to enter.
What might happen if cell membranes did not have pores?
What might happen if cell membranes did not have pores? Substances would not be able to move in and out. Viruses and bacteria would be able to get in easily. Amount of water inside a cell is the same as the amount of water outside a cell.
What happens when plant cell is kept in hypotonic solution?
Hypertonic solutions have a higher solute concentration. When plant cells are placed in such solutions, water will move from inside the plant cell to the outside of the cell, resulting in the shrinking of the cell (the cell is said to be plasmolyzed).
What happens to plants when they are deprived of water?
Response to Drought. On hot afternoons, plants might temporarily wilt but revive again during the cool of the evening. If water deprivation continues, physiological changes occur within the plant in response to moisture loss.
What happens if you water a plant with salt water?
Explanation: If you water a plant with salt water, it will wilt, and will eventually die. This is due to the fact that the salt water is a hypertonic solution when compared to the plant cells, and water inside the plant cells will diffuse by osmosis out of the cells in order to reduce the concentration of the salt solution.
Why do plants need a lot of water?
The stomata are used in this process to help move and draw moisture from the plant and into the environment around it. If a plant is transpiring a lot, it will need more water. As the plant released its oxygen and H2O, more is coming in via the roots.