Make Up Test Flashcards
A lower concentration of water inside of the cell is what type of solution?
Hypotonic
Which part of the membrane determines which particles may pass?
Proteins
Which part of the membrane is non-polar?
Fatty acids
What is the head of the phospholipid made of?
Phosphates
What part of the phospholipid is toward the outside of the membrane bilayer?
Phosphates
Membranes that need to be more fluid or moveable needs lots of what type of material?
Lots of unsaturated fatty acids
Which method of moving materials across a membrane uses energy?
Osmosis
What method of moving materials across a membrane involves water going from an area of high concentration to an area of low concentration?
Osmosis
What characteristic of membranes do arctic animals need?
Lots of unsaturated fatty acids
“All particles, living & non-living, move constantly in random patterns” explains ________
Brownian motion
Transport of large particles into the cell is called
Endocytosis
Transport of a large particle out of the cell is called______
Exocytosis
What part of the plasma membrane carries out most of the functions of the membrane?
proteins
A higher concentration of water inside of the cell is what type of solution?
Hypertonic
An equal concentration of water inside and outside of the cell is what type of solution?
Isotonic
“No further change, even though the particles continue to move” explains _____
Dynamic equilibrium
What property of a membrane allows different cells to carry on different activities within the same organism?
Selective permeability
Particles moving from an area of high concentration to an area of low concentration is called____
Concentration gradient
Particles moving from an area of low concentration of to an area of high concentration is called____
Active transport
What is the tail of the phospholipid made of?
Fatty acids
Each layer of the membrane is a sheet made mainly of what type of molecules?
Phospholipids
What type of molecule has the function of making the plasma membrane more stable?
Cholesterol
What method of moving materials across a membrane uses transport proteins?
Facilitated diffusion
Which method of moving materials across a membrane goes against the concentration gradient?
Active transport
Which part of the membrane acts as a marker to other chemicals so your immune system can distinguish between your cells and those of a pathogen?
Proteins
What method of moving materials across a membrane uses transport proteins with facilitated diffusion?
Passive transport
Where would oxygen diffuse across a membrane?
Phospholipids
