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Substances that can pass through cell membranes by diffusion include?
Wiki User
∙ 13y ago
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
Wiki User
∙ 16y ago
Wiki User
∙ 13y agooxygen.
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Which molecules help control movement of substances through cell membranes?
proteins help control movement of substances through cell membranes.
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 allows water molecules to pass through?
water can pass through cell membranes by osmosis- similar to diffusion
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
Membranes that allow only certain substances to pass through are called semipermeable and?
selectively-permeable membrane and the process of this type of diffusion is called fascilitated diffusion
How can polar molecules pass through cell membranes?
Through facilitated diffusion
Which molecules help control movement of substances through cell membranes?
proteins help control movement of substances through cell membranes.
What are membranes that allow only certain substances to pass through them?
Semi permeable membranes.
What is facillitated diffusion?
Facilitated diffusion is, the movement of specific molecules across cell membranes through protein channels
How are diffusion and facilitated diffusion similar?
Substances enter a cell through the cell membrane
What is a protein moves molecules across a membrane?
Facilitated diffusion moves molecules through cell membranes passively.
What is the term for particles moving through cell membranes?
Diffusion is the general term.
Which substances may pass through a cell membrane by simple diffusion?
Small, uncharged molecules can pass through the phospholipid bilayer, notably oxygen and carbondioxide.Other substances may pass through channel and carrier proteins by diffusion, sometimes referred to as facilitated diffusion as the proteins facilitate (make possible) the passage of substances that cannot cross the lipid layer. These substances include glucose and a variety of ions that are moving down their concentration gradients.
Water crosses plasma membranes through specialized channels?
Water crosses plasma membranes through specialized channels called diffusion and concentrated gradient.
What allows water to pass through?
water can pass through cell membranes by osmosis- similar to diffusion
