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Oxygen crosses the plasma membrane by?
simple diffusion. Oxygen is a small, nonpolar molecule that can pass freely through the lipid bilayer of the plasma membrane. This process does not require energy and is driven by the concentration gradient of oxygen on either side of the membrane.
Does egg albumin moves across a plasma membrane?
No, egg albumin is a large protein molecule that cannot pass through the plasma membrane on its own. It would require specific transport mechanisms, such as endocytosis or facilitated diffusion, to cross the membrane.
What does NOT influence the rate of diffusion of a chemical across a plasma membrane?
Besides the concentration of the chemical, the pore size of the plasma membrane, and the osmotic pressure of the cytoplasm - nothing else influences the rate of diffusion of a chemical across a plasma membrane.
Water crosses plasma membranes through specialized channels?
Water crosses plasma membranes through specialized channels called diffusion and concentrated gradient.
Which type of molecule is found in the plasma membrane?
The plasma membrane is composed mostly of phospholipids
What is diffusion and how does it relate to plasma membrane?
Diffusion is simply the movement of one molecule from an area of high concentration to low concentration. It is semi related to the plasma membrane because plasma membrane does allow diffusion, to an extent. Plasma membrane is semipermeable and only allows certain things to diffuse in or diffuse out.
Oxygen crosses the plasma membrane by?
simple diffusion. Oxygen is a small, nonpolar molecule that can pass freely through the lipid bilayer of the plasma membrane. This process does not require energy and is driven by the concentration gradient of oxygen on either side of the membrane.
A lipid base molecule primarily composed of 4 interlocking rings of carbon that readily crosses a plasma membrane is?
testosterone
Does egg albumin moves across a plasma membrane?
No, egg albumin is a large protein molecule that cannot pass through the plasma membrane on its own. It would require specific transport mechanisms, such as endocytosis or facilitated diffusion, to cross the membrane.
What small molecule decreases the fluidity of the plasma membrane?
Cholesterol is the small molecule that decreases the fluidity of the plasma membrane.
What does NOT influence the rate of diffusion of a chemical across a plasma membrane?
Besides the concentration of the chemical, the pore size of the plasma membrane, and the osmotic pressure of the cytoplasm - nothing else influences the rate of diffusion of a chemical across a plasma membrane.
What does the fluid mosaic model?
The fluid mosaic model represents the structure of the plasma membrane. It shows that the plasma membrane consists of a phospholipid bilayer ( with hydrophilic heads- which face the interior and exterior of the plasma membrane- and hydrophobic tails) as well as transport proteins namely carrier proteins and pore proteins. The size and polarity of a molecule determines how it will pass through the semi-permeable plasma membrane whether by simple diffusion, osmosis, facilitated diffusion or active transport.
Water crosses plasma membranes through specialized channels?
Water crosses plasma membranes through specialized channels called diffusion and concentrated gradient.
How does oxygen crosses the plasma membrane if thr concentration of oxygen is lower inside the cell than it is outside the cell?
Oxygen crosses the plasma membrane through passive diffusion, moving from an area of higher concentration (outside the cell) to an area of lower concentration (inside the cell). This process occurs due to the concentration gradient and the lipid nature of the plasma membrane, which allows small, nonpolar molecules like oxygen to pass through easily.
Which type of molecule is found in the plasma membrane?
The plasma membrane is composed mostly of phospholipids
How do glucose molecules cross a plasma membrane?
Facilitated Diffusion
What type of plasma membrane transport is used for exchange?
Diffusion
