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How is water transported across the membrane?
Water is transported by a passive transport called osmosis. Osmosis is diffusion of water across the membrane.
What is it called when molcules are transported across the cell membrane by carrier?
osmosis
How carbon dioxide water and sodium ions are transported across the cell membrane by both passive and active transport?
Carbon dioxide cannot be transported across the membrane by passive transport. However, water and sodium ions can be transported using passive transport.
Small pieces of matter even whole cells can be transported across the plasma membrane in what?
vesicle
What happens if a molecule is too large to go through a membrane?
The molecule will be transported across the membrane by way of a transport protein or protein channel.
Which is a factor that determies whether a mole can cross a cell membrane?
Lipid solubility determines if it will diffuse across. The presence of specific protein carrier molecules determines if it will be transported across the membrane.
Why are proteins and polysaccharides cannot be transported across a cell membrane by carrier proteins?
They are too large to be transformed by carrier proteins. They are moved across by Vesicles instead.
The transfer of high-energy electrons down the electron transport chain causes what to be transported across the mitochondrial membrane?
The electron movement causes H+ ions to be transported to the cystolic side of the mitochondrial membrane from the mitochondial matrix. This creates the electrochemical gradient that is used to generate chemical energy (ATP from ADP)
Is diffusiona type of passive transport or active transport?
Passive transport is where materials are transported across a membrane without the use of stored energy. Active transport is where materials are transported across a membrane using ATP, or another source of stored cellular energy. Diffusion is where solutes flow across a membrane in response to a concentration gradient, and requires no energy input to occur. Therefore, diffusion is a form of passive transport.
What does lysosomes have to do with cell transport?
When food substances are transported across the cell membrane they may be sent to the lysosomes where they will be digested with enzymes.
What is an apoplast?
An apoplast is a space outside of a plant's plasma membrane through which water and soluble nutrients are transported across a tissue or organ.
Under what condition would a molecule need to be actively transport across a membrane?
A molecule would be actively transported when an equal concentration of solutes exist on either side of the cell membrane.
