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depends on type of membrane
1) semi-permeable membrane - allows only solvent molecule to pass ex. parchment paper
2) permeable membrane - allows both solvent and solute molecules to pass ex. filter paper
3) selectively permeable membrane - allows solvent molecules and some of selected solute molecules to pass ex. plasma membrane
What else can I help you with?
Which two types of substances can move by diffusion?
Two types of substances that can move by diffusion are gases and small nonpolar molecules, such as oxygen and carbon dioxide. These substances can easily pass through cell membranes due to their ability to move from areas of higher concentration to areas of lower concentration. Additionally, small polar molecules, like water, can also diffuse across membranes, though often through specialized channels. Overall, diffusion is a crucial process for the movement of various substances in biological systems.
What is a protein moves molecules across a membrane?
Facilitated diffusion moves molecules through cell membranes passively.
Water crosses plasma membranes through specialized channels?
Water crosses plasma membranes through specialized channels called diffusion and concentrated gradient.
What are the six processes by which materials pass through cell membranes?
endocytosisfacilitated diffusionexocytosissimple diffusionactive transportpassive transport
What statements tells how facilitated diffusion differ from simple diffusion?
Particles move through cell membranes w/out the use of energy by cells.
What substances that can pass through call membranes by diffusion include?
Oxygen
What Many substances move through cell membranes from areas of higher concentration to areas of lower concentration in the process of?
Diffusion.
Which two types of substances can move by diffusion?
Two types of substances that can move by diffusion are gases and small nonpolar molecules, such as oxygen and carbon dioxide. These substances can easily pass through cell membranes due to their ability to move from areas of higher concentration to areas of lower concentration. Additionally, small polar molecules, like water, can also diffuse across membranes, though often through specialized channels. Overall, diffusion is a crucial process for the movement of various substances in biological systems.
What is a catchy title for osmosis and diffusion?
"Flowing Through Membranes: Osmosis and Diffusion Explained"
How can polar molecules pass through cell membranes?
Through facilitated diffusion
Controls what moves into cells?
Cell membranes control what moves into cells by selectively allowing certain substances to pass through while blocking others. This selectivity is maintained through various processes such as diffusion, facilitated diffusion, and active transport. Additionally, cell membranes contain specific transport proteins and channels that help regulate the movement of molecules in and out of the cell.
What are membranes that allow only certain substances to pass through them?
Semi permeable membranes.
Why aren't osmosis and simple diffusion sufficient for the transport of all substances?
Osmosis and simple diffusion are not sufficient for the transport of all substances due to their nature. They only have the ability to transport substances which can pass through the cell membrane.
What does active transport and facilitated diffusion have in common?
Both active transport and facilitated diffusion are methods of moving substances across cell membranes. Active transport requires energy input to move substances against their concentration gradient, while facilitated diffusion does not require energy and moves substances along their concentration gradient with the help of transport proteins.
What is a protein moves molecules across a membrane?
Facilitated diffusion moves molecules through cell membranes passively.
How are diffusion and facilitated diffusion similar?
Substances enter a cell through the cell membrane
What is the term for particles moving through cell membranes?
Diffusion is the general term.
