Organelles
The Powerhouse of the Cell
What is the Mitochondria?
This means "two" layers...
What is bilayer?
The plasma membrane helps the cell maintain a balance of substances inside and outside the cell. This is referred to as:
What is homeostasis/equilibrium?
This term describes the movement of water across a semipermeable membrane from an area of lower solute concentration to higher solute concentration.
What is osmosis?
If a bag containing 20% sugar is placed in a 15% sugar solution what will happen to the size of the bag if it is permeable to water and not to sugar?
The bag will swell because water moves into the bag.
Eukaryotes and prokaryotes have this organelle in common
What is the Ribosome?
This cellular property allows a cell to maintain different concentrations of ions and molecules inside and outside its membrane.
What is semipermeable?
This portion of the bilayer is hydrophobic
What is the tails of the phospholipids?
These are the proteins that form channels or pores in the membrane, allowing specific ions or molecules to pass through without using any energy.
What are channel proteins?
Causes a cell to swell:
Hypertonic, Hypotonic, or Isotonic
Hypotonic
This rigid outer layer provides support and protection to plant cells.
What is a cell wall?
These components of the cell membrane help with the movement of certain solutes across the membrane
What is an integral protein?
This structure is known as the "fluid mosaic model" because it is composed of lipids, proteins, and carbohydrates, all moving within a flexible layer.
What is the cell membrane?
This protein helps facilitate the movement of water across the membrane
What is an Aquaporin?
How does concentration gradient flow?
High to Low
This organelle contains the cell's genetic material and directs all cell activities.
What is the nucleus?
This steroid molecule found in animal cell membranes helps regulate membrane fluidity.
What is Cholesterol?
This model describes the cell membrane as a fluid combination of lipids and proteins.
What is the fluid mosaic model?
A freshwater plant is placed in a container of saltwater. What will most likely happen to the plant?
They will shrink because water will move out of them.
This type of transport does not require any additional energy to occur.
What is Passive Transport?
This organelle is where photosynthesis occurs, allowing plants to convert sunlight into energy.
What is the chloroplast?
This type of cellular communication involves signaling molecules binding to receptors on the surface of other cells.
What is cell signaling?
These proteins in the cell membrane bind to signaling molecules, initiating a cellular response.
What are receptor proteins?
This type of passive transport involves the movement of molecules from high to low concentration without the use of energy.
What is diffusion?
This type of transport requires energy to transport contents
What is active transport?