Cell Membrane
The border around any cell
What is a cell membrane?
This type of organism must carry out all life processes within a single cell.
What is a unicellular organism?
Movement of particles from high to low concentration.
What is diffusion?
If two solutions are isotonic, what does that mean?
The solution is the same strength on both sides of the membrane, meaning there is an equal amount of sugar and water on both sides.
The process of taking material into the cell by means of infoldings or pockets of the cell membrane.
What is endocytosis?
Tip: "Endo"= In
This describes the membrane’s ability to control what enters and leaves.
What is selective permeability?
This type of organism has cells that are specialized for different functions.
What is a multicellular organism?
The diffusion of water is called this.
What is osmosis?
What is a concentrated sugar solution that is considered above strength called?
It is considered hypertonic.
Tip: Hyper = High Strength
The process in which extensions of the cytoplasm surround a particle and package it within a food vacuole, and then the cell engulfs it.
Hint: Amoebas use this method for taking in food
What is Phagocytosis?
The membrane is made of two layers of this type of molecule.
What is a phospholipid bilayer?
Unlike multicellular organisms, these organisms cannot have specialized tissues or organs.
What are unicellular organisms?
This type of transport requires no energy.
What is passive transport?
What is a solution called when it is below strength?
It is considered hypotonic.
Tip: Hypotonic comes from the Greek word hupo, which means under, and the Latin word tonicus, meaning strength or tension. So a hypotonic solution is less strong or less concentrated than another solution of the same type.
What is the process in which tiny pockets form along the cell membrane fill with liquid and pinch off to form vacuoles within the cell?
The process is known as pinocytosis.
Proteins in the membrane help move materials in a process called this.
What is facilitated diffusion?
This is the main reason multicellular organisms can grow larger than unicellular organisms.
What is cell specialization?
This type of transport requires ATP.
What is active transport?
the minimum pressure needed to stop the inward flow of solvent (like water) across a semipermeable membrane from a less concentrated solution to a more concentrated solution
What is osmotic pressure?
The process in which the membrane of the vacuole surrounds the material fuses with the cell membrane, forcing the contents outside the cell.
What is exocytosis?
Tip: "Exo"= Exit
What are the roles of carbohydrates and proteins in cell membranes?
Proteins: Provide structural support and act as a channel to allow substances to pass.
Carbohydrates: for cell recognition, and stores protiens.
If one cell dies in this type of organism, the organism usually continues to live.
What is a multicellular organism?
What is it called when the solute is the same throughout the whole system?
What is equilibrium?
What structures prevent plant and bacterial cells from potential damage resulting from osmotic pressure?
The cell wall
Do all these processes happen in both animal and plant cells?
Yes these processes both happen in plant and animal cells