(higher)
False. High turgor pressure causes a plant to become stiffer.
A concentration gradient
A solvent is the liquid in which solutes are dissolved, such as water.
(high concentration) (low concentration)
The egg should return to its original size
True
Particle Theory
Exocytosis
Endocytosis
An oxygen particle, because in general only small partciles can pass through the membrane.
(equal) (water)
The diffusion of water across a selectively permable membrane from an area of higher concentration to nd area of lower concentration.
(higher)
The movement of particles from an area of higher concentration to an area of lower concentration.
A membrane that only allows small particles to pass through, while keeping out larger and/or harmful particles.
False. It involves the movement of WATER particles through a selectively permeable membrane.
Both involve the movement of particles across a concentration gradient.
When a wilted plant is watered, water moves into its cells (from the bottom/roots), and into the vacuoles, which makes the cell expand. This increases turgor pressure.
A type of endocystosis where the cell extends finger-like pseudopods in order to catch large particles, such as bacteria.
Particles that are disolved in water, such as salts, proteins, and sugars.
True.
Osmosis is the movement of water particles from an area of high water concentration to low across a selectively permable membrane. In diffusion, particles move from an area of high concentration to low, but not always through a selectively permeable membrane.
(fat particles) (proteins)
False. Small particles pass easily through, large molecules do not.
What is a solute? Give an example.
A plant will wilt when it has high turgor pressure.
What is osmosis?
What do we call the difference in concentration of a substance?
Some unicellular organisms use exocytosis as a way of eliminating wastes.
What is diffusion?
Diffusion happens faster at warmer temperatures because the cells are moving faster.
A cell expands if there is a ___ concentration of water OUTSIDE the cell than inside
What is the name of the theory that states that particles are in constant motion, bumping into eachother at random.
During diffusion, a substance moves from an area of ____ concentration, to an area of ___ concentration.
What is the name of the process in which a cell gets rid of large amounts of waste?
A cell will shrivel if there is a ___ concentration of water INSIDE the cell than outside.
Fat particles are larger than oxygen particles, which particle would most likely to be brought into a cell by diffusion?
In general, large molecules pass easily through the cell membrane, but small molecules do not.
Describe how diffusion and osmosis are similar.
Explain how placing our cellery in water caused the stem and leaves to become firmer and straighter.
A cell does not change if there are ___ concentrations of w___ inside and outside the cell.
The cell membrane is made of a double layer of ___ with ___ embedded in it.
What is phagocytosis?
Osmosis involves the movement of salt particles through a selectively permeable membrane.
What is a solvent? Give an example.
If we soaked an egg in a solution of corn syrup for 24h, then placed it in pure water for 24h, what would happen to the egg (according to osmosis theory)?
What is a selectively permeable membrane?
An amoeba is a unicellular organism that eats other unicellular organisms, like bacteria. Which process does the amoeba most likly rely on to do this?
Describe how diffusion and osmosis are different.
