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How do carriers proteins facilitate passive transport of molecules across a membrane?
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∙ 8y ago
Carrier proteins facilitate passive transport of molecules across a membrane by changing its shape, by using ATP, to allow a substance to pass through the membrane.
Maude Kulas
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What type of molecules need more help to get through the membrane and What is help them?
Large or polar molecules typically need more help to get through the membrane. They rely on specialized transport proteins such as channels or carriers to facilitate their passage. These transport proteins create pores or binding sites that allow the molecules to cross the membrane.
Why do cells need carriers proteins that transport glucose?
Large molecules, such as glucose, are not able to pass through the cell membrane. Therefore proteins are needed to transport them across.
A type of passive transport across a cell membrane that requires special carriers is?
Active transport
Is active or passive transport involved?
In active transport the ATP is used to pump molecules up the concentration gradient. Transport of molecules occurs from a low concentration of solute to high concentration of solute and requires cellular energy. While passive transport involves carriers, channels, or direct diffusion through a membrane.
In eukaryotes the electron transport chain is composed of a series of electron carriers located in the what of the mitochondrion?
The electron carriers are located in the inner membrane of the mitochondrion. In the prokaryotes, the electron transport chain is located in the cell membrane.
What biomolecule helps transport molecules across the membrane?
proteins
What are the protein molecules in a cell membrane that assist in cell transport?
Protein molecules are responsible for membrane transport. In passive transport diffusion is the phenomenon in which molecules flow naturally from areas of high concentration to lower concentrations.
What is the membrane that surrounds the cells?
this is the cell membrane made primarily of lipid molecules with proteins incorporated into it that aid in transport of molecules across the membrane
What type of molecules embebbed in the plasma membrane allows molecules to pass through the membrane by active or passive transport?
proteins
Which term refers to the collections of electron carriers that are embedded in the inner mitochondrial membrane and in the thylakoid membrane?
The electron transport chain.
What ways molecules cross the membrane with energy?
active transport
What is the act of molecules crossing a membrane?
passive or active transport
