Table of Contents
Why are cells not the size of watermelons?
3-1 Why are cells not the size of watermelons? Smaller cells have smaller nutritional requirements than large cells but have a proportionately larger surface through which they can absorb the substances they need. A single nucleus can control the metabolic activity of a small cell better than it could a large one. via
Is the movement of materials out of a cell through the fusion of a transport vesicle with the plasma membrane?
exocytosis (A membranous vesicle is fusing with the plasma membrane and releasing its contents into the extracellular fluid.) phagocytosis (Phagocytosis involves the engulfing of large particles.) receptor-mediated endocytosis (The end-result of this process pulls the membrane itself into a vesicle. via
When a solution has a higher concentration of dissolved particles than the cell What is this called?
A solution will be hypertonic to a cell if its solute concentration is higher than that inside the cell, and the solutes cannot cross the membrane. If a cell is placed in a hypotonic solution, there will be a net flow of water into the cell, and the cell will gain volume. via
What solution has the highest concentration of particles?
A hypertonic solution has a higher concentration of dissolved particles then a cell. via
Why do inclusions vary in appearance?
The appearance of inclusions varies depending on what they contain & whether or not they have an envelope. They store substances the cell eventually uses. By controlling cellular activities, the nucleus controls the well-being of the cell. Can a cell that does not contain a nucleus live as a cell that does contain one? via
WHY CAN T cells get as large as golf balls See section 5.2 page?
Why can't cells get as large as golf balls? A cell that large would not have enough surface area to use in exchanging materials. via
Is responsible for moving large amounts of substances into or out of a cell?
Vesicles or other bodies in the cytoplasm move macromolecules or large particles across the plasma membrane. There are two types of vesicle transport, endocytosis and exocytosis (illustrated in the Figure below). via
What is it called when a cell expels materials?
Exocytosis is the reverse of endocytosis. Quatities of material are expelled from the cell without ever passing through the membrane as individual molecules. By using the processes of endocytosis and exocytosis, some specialized types of cells move large amounts of bulk material into and out of themselves. via
Does hypertonic shrink or swell?
A hypotonic solution causes a cell to swell, whereas a hypertonic solution causes a cell to shrink. via
What are the two major types of transport?
There are two major types of cell transport: passive transport and active transport. Passive transport requires no energy. It occurs when substances move from areas of higher to lower concentration. Types of passive transport include simple diffusion, osmosis, and facilitated diffusion. via
Where is the highest water concentration?
Water molecules move into and out of the cell at an equal rate, so the cell's size remains constant. than a cell. This means water concentration is higher inside the cell than outside. via
Why does water move towards high solute concentration?
Very simple explanation for osmosis is the concentration of water explanation - water in pure water is simply more concentrated than water in solutions because the solute has to take up some room in the solution. via
What is the relationship between the concentration of particles in a solution?
Answer: As solute concentration increases, vapor pressure decreases. Step-by-step explanation: As solute concentration increases, the number of solute particles at the surface of the solution increases, so the number of solvent particles at the surface decreases. via