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Get out your clicker. Please select a Team. Team 1 Team 2 Team 3 Team 4 Team 5 Team 6. 45. The dispersal of perfume in a room is an example of. Diffusion Osmosis Active transport Endocytosis. 45.
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Please select a Team. • Team 1 • Team 2 • Team 3 • Team 4 • Team 5 • Team 6 45
The dispersal of perfume in a room is an example of • Diffusion • Osmosis • Active transport • Endocytosis 45
When an egg is placed in distilled water, water will diffuse into the egg through the process of • Solubility • Osmosis • Selective transport • Endocytosis 45
Cells will shrink when placed in a(n) • Hypotonic solution • Hypertonic solution • Isotonic solution • None of the above 45
The interior portion of a cell membrane forms a nonpolar zone that • Allows polar molecules to pass through the membrane • Allows food to pass through the membrane • Prevents ions and most large molecules from passing through the membrane • None of the above 45
Proteins that act like selective passageways in the cell membrane are known as • Marker proteins • Channel proteins • Receptor proteins • Enzymes 45
Ions move through by . • Receptor proteins; endocytosis • Marker proteins; diffusion • Ion channels; passive transport • Enzymes; active transport 45
Diffusion continues until the concentrations are the same in all areas which is known • Active transport • Dynamic equilibrium • Passive transport • Exocytosis 45
This determines the direction in which a substance diffuses across a cell membrane. • Diffusion • Dynamic equilibrium • Osmosis • Concentration gradient 45
Proteins involved in both facilitated diffusion and active transport are • Carrier proteins • Receptor proteins • Marker proteins • Enzymes 45
Which of the following require energy? • Diffusion • Osmosis • Facilitated diffusion • Sodium-potassium pump 45
Unlike active transport, passive transport • Requires no energy • Moves substances against their concentration gradient • Does not involve carrier proteins • All of the above 45
Which of the following is a form of passive transport? • Endocytosis • Exocytosis • Ion channels • Sodium-potassium pumps 45
Sodium-potassium pumps will pump sodium ions the cell and potassium ions the cell. • Into, into • Out of, out of • Into, out of • Out of, into 45
Molecules that are too large to fit across the cell membrane can be transported into the cell by and out of the cell by • Facilitated diffusion; ion channels • Diffusion; osmosis • Channel proteins; dynamic equilibrium • Endocytosis; exocytosis 45
Unlike facilitated diffusion, active transport • Moves substances against the concentration gradient • Uses proteins in the process • Moves molecules through the cell membrane • Requires no energy 45
Which cell is most likely to gain both water molecules and solute molecules as the system approaches equilibrium? • Cell 1 • Cell 2 • Cell 3 • Cell 4 45
In this system, solute molecules in cell 4 are most likely to • Remain in cell 4. • Adhere to cell 4’s membrane • Diffuse into cell 3 • Diffuse into cell 2 45
In which direction are water molecules in this system most likely to diffuse? • From 1 to 2 • From 3 to 4 • From 4 to 2 • From 1 to 3 45
Osmosis is the diffusion of molecules across a cell membrane. • Glucose • Ions • Starch • Water 45
Membranes are if they allow only certain substances to move across them. • Permeable • Impermeable • Semipermeable • None of the above 45
A cell placed in a strong salt solution would probably do what because of osmosis? • Burst • Shrink • Stay the same • Get bigger then smaller 45
Which of the following do NOT require carrier proteins? • Active transport • Facilitated diffusion • Ion channels • Osmosis 45