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How does a vacuole assist in homeostasis?
A vacoule is the excretory organelle of the cell. It regulates the turgidity of the cell by regulating the amount of water inside the cell. The vacoule always has some amount of water present inside it. If the cell contains more water, it absorbs the water and allows it to diffuse out of the cell. If the cell contains less water, the water from the vacoule will re-enter the cell to maintain its turgidity.
Higher salt concentration outside cell than inside what would happen?
Through the process of osmosis, the water inside the cell would leave the cell in order to equalize the concentration of water relative to salt in and outside the cell. The cell would shrink. Salt is not passing through at all.
Depolarization would occur.....a-sodium cations leave the cell b-potassium cations leave the cell c--chloride anions enter the cell d-calcium cations enter the cell?
In a polarized cell membrane there are an excess of sodium cations outside the cell and a relative abundance of potassium cations inside the cell. When a cell depolarizes, sodium ions rush into the cell causing the interior surface of the cell membrane to become slightly more positive, i.e. depolarized. When this happens it triggers potassium channels to open allowing potassium ions to flow out repolarizing the cell. While not completely correct, the best answer of your choices here would be b - potassium cations leave the cell.
Why do cell enter into meiosis?
Cells enter mitosis to reproduce and grow more cells.
Immerse a living human cell in a hypotonic solution and water will tend to?
the water molecules will go into the cell since it will move from a concentration of higher to a concentration of lesser. If the cell had more water inside than the surrounding area then the water would leave the cell until an equilibrium is reached between the inside of the cell and the outside of the cell.
Does it take more power to turn off a cell phone then to leave it on?
It takes more power to leave it on
How can thin wall be advantage to cells that store materials?
Materials can enter and leave the cell more easily and quickly, and the membrane can stretch and the cell expand to accomodate larger amounts of storage product. This is expecially seen in fat cells.
Water will diffuse out of a cell when the cell is placed in a hypertonic solution?
You are correct. A hypertonic solution is a solution outside the cell that has more solute in it that water. This means that there is more water inside the cell than solute. Because there is more water in the cell, it will diffuse out of it and the cell will shrivel up.
When the salt solution was added to the onion cells which was the greater concentration (most pure) of water(inside or outside the cell membrane?
The water inside the cell was less salty and therefore had more water than the outside. Water then leave the cells and they will become 'wrinkled' looking or wilted.
What happens to a cell or a nucleus when it is placed in water?
if the cell is of plant origin: as water will enter it, the size of its vacuole will increase pushing the cellular contents against the cell wall, the cell wall in turn exerts an opposite pressure to prevent the entry of more water. In this state the cell is known to become turgid. if the cell is of animal origin: as it has no cell wall it will burst throwing all the cellular contents out.
What happens if a plant cell contains more solutes than its surrounding environment?
A cell with a greater solute concentration in the external environment is hypertonic state. This means that water will be drawn out of the cell and into the external environment causing the cell to shrivel up.
What happens to animal cells in salt water?
Salt water is hypertonic (has more solute) to the cell. So when an animal cell is put in salt solution water will rush out and the cell will shrivel up because there is too much salt and too little water inside. the salt solution is said to be hypertonic to the cytoplasm of the cells.
