What type of transport occurs when water is moved out of paramecium?
Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of higher concentration to an area of lower concentration. Water moves into and out of cells by osmosis.
Which factors affect the rate of osmotic movement of water?
The rate of osmosis varies with a number of factors, including temperature, pressure, and the difference in solute concentrations between two solutions separated by a selectively permeable membrane.
How do cells such as algae and protists avoid lysis in fresh water?
how do cells such as algae and protists avoid lysis in fresh water? Most protists lack a cell wall and would be in danger of lysis were it not for their contractile vacuole. This is a cell component with the ability to pump excess water out of the cell.
Which of the following best explains why a hypotonic solution causes a cell to swell?
What best explains why a hypotonic solution causes a cell to swell? A solution that has a greater solute concentration compared to that of the cytoplasm of a cell is... In which type of solution will animal cells crenate? What is needed to complete active transport of molecules?
What is the effect of water action in osmosis?
The osmotic effect causes a flow of water from the weak solution to the strong solution. Thus water on the outside of concrete (almost pure, i.e. a weak solution) is drawn into the pores where there is a stronger solution.
What are the factors that affect the rate of osmosis?
The factors affecting the rate of osmosis include:Pressure.Temperature.Surface Area.Water Potential.Concentration gradient.
Is freshwater hypertonic or hypotonic?
hypotonicFreshwater is hypotonic to Elodea A hypotonic solution is a solution that contains less (hypo) solutes than the cytoplasm of the cell. Thus, a hypotonic solution has more water than the cell and water has a tendency to move (diffuse) into the cell.
How do lower forms of organisms such as Paramecium maintain water balance with the environment?
Paramecium and amoeba live in fresh water. Their cytoplasm contains a greater concentration of solutes than their surroundings and so they absorb water by osmosis. The excess water is collected into a contractile vacuole which swells and finally expels water through an opening in the cell membrane.
Why is contractile vacuole more active in freshwater?
In freshwater, the solute concentration is comparatively lesser i.e., a hypotonic solution where the concentration of solutes (namely salt) is lesser than internal fluids. Consequently, in such an environment, osmosis leads to the accumulation of water in the cell from the outside. Hence, they are more active.
Does hypotonic solution cause osmosis?
A cell placed into a hypotonic solution will swell and expand until it eventually burst through a process known as cytolysis. These three examples of different solute concentrations provide an illustration of the spectrum of water movement based on solute concentration through the process of osmosis.
Which osmosis occurs in hypotonic solution?
Exosmosis- The water passes out of the cell when a cell is put in a hypertonic solution, and the cell becomes flaccid. This water movement out of the cell is referred to as exosmosis. This occurs because within the cytoplasm, the solute concentration of the surrounding solution is greater than that.
What happens to the movement of water molecules when the cell is placed in a hypotonic solution?
A hypotonic solution means the environment outside of the cell has a lower concentration of dissolved material than the inside of the cell. If a cell is placed in a hypotonic solution, water will move into the cell. This causes the cell to swell, and it may even burst.
How do these factors alter diffusion rates?
An increase in pressure will cause molecules to move more quickly, increasing molecular collisions. Molecular size and mass affect diffusion rates. The larger a molecule, the slower it will diffuse through a medium. Resistance can affect diffusion rates.
Which of the following factors would tend to increase membrane fluidity?
High temperature increases membrane fluidity.
What are the components of water potential and why is water potential important for the movement of water in plants quizlet?
It can be used to predict the movement of water through cells or tissues. What are the components of water potential? The solute potential (dependent on the solute concentration, also called osmotic potential) and the pressure potential (the exertion of pressure on a solution, either positive or negative).
Which of the statement is true about osmosis?
Answer and Explanation: The statement that is true about osmosis is d. The greater the osmotic pressure of a solution, the greater the tendency for water to move into the...