Membrane Fluidity
Found as part of the cellular membrane, these contain both a hydrophobic region and hydrophilic region.
What are phospholipids?
These proteins are bound to the surface of the membrane.
What are peripheral proteins?
Channel proteins, carrier proteins and sodium/potassium pumps are examples of this property of the cell membrane.
Transport
When a vesicle migrates to the membrane, fuses and releases the contents within, this is called __________.
Exocytosis
This structure is composed of DNA, RNA and lipids. It controls the metabolic activities of the cell.
Nucleus
These two substances are found within the membrane.
Proteins and lipids
These proteins penetrate the core of the membrane.
What are integral proteins?
Aquaporins facilitate the passage of what through the cell membrane?
Water.
This process involves forming vesicles from the plasma membrane.
Endocytosis
This small structure plays an important role in the synthesis of proteins
Ribosome
Phospholipids can move laterally and can flip-flop from the extracellular side to cytoplasmic side. Which movement is more common?
Lateral movement
This steroid effects membrane fluidity and temperature, packing tight in cool temps and restraining movement of phospholipids in warm temps.
Cholesterol
Typically, which type of molecules bind and play a role in cell to cell recognition?
Carbohydrates.
When a cell engulfs a particle in a vacuole.
Phagocytosis
Main site of cellular respiration and can make certain proteins on their own.
Mitochondria
Which sort of fatty acid will allow greater fluidity of the cellular membrane during cooler temperatures?
Unsaturated.
Integral proteins consist of stretches of amino acids, coiled into alpha helices. Are these polar or nonpolar regions?
Nonpolar.
This is an example of passive transport, allowing a substance to flow from a high concentration to low.
Diffusion (or osmosis)
Extracellular fluid is "gulped" into tiny vesicles.
Pinocytosis
This makes vacuoles/vesicles and is responsible for secretion.
Golgi Apparatus
What is the term describing the membrane of a cell as a fluid structure mixed with various proteins embedded in it?
Fluid mosaic
What is needed to transport ions against their gradient?
Energy - ATP
The most common active transport system in animal cells is what?
Sodium-Potassium pump
Receptor-mediated endocytosis involves the binding of these to receptors, triggering the formation of vesicles.
Ligands
Endoplasmic Reticulum