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True. Permeable means that things are able to pass through something, and selective indicates that certain things are able to pass through.
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∙ 11y ago
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Is it true that the transport proteins span the cell membrane allowing the selectively permeable membrane to regulate which molecules enter an leave the cell?
false
Osmosis is the process by which molecules tend to move from an area of higher concentration to an area of lower concentration is this true or false?
falseOsmosis is the diffusion of water through a semi-permeable membrane.
What does it mean to say most biological membranes are selectively permeable?
Selectively permeability is a property of biological membranes that allows them to regulate the passage of substances across them. In spite of heavy traffic through them, cell membranes are selectively permeable, and substances do not cross the barrier indiscriminately.
The nuclear membrane disintegrates during prophase true or false?
true
Hydrophilic ends of proteins are oriented toward membrane surfaces. true or false?
false
Is it true that the transport proteins span the cell membrane allowing the selectively permeable membrane to regulate which molecules enter an leave the cell?
false
Is it true if the process by which water moves across a selectively permeable membrane is called diffusion?
Diffusion is a physical process. When it is performed through a selectively permeable membrane, it is called osmosis. Thus osmosis is an appropriate word for movement of water molecules through a selectively permeable membrane and not diffusion.
Plasma membrane is best described as a fluid mosaic model?
False; the fluid mosaic model describes the plasma membrane as a flexible boundary of a cell.
Is it true or false that ribosomes are permeable to the nuclear membrane?
TRUE
The process that relies on a concentration gradient of protons?
Chemiosmosis, the diffusion of hydrogen ions on a selectively permeable membrane.
How do particles move through a permeable membrane according to diffusion?
Yes, that is very true, especially with osmosis (the passing of water through a selectively permeable membrane).
Osmosis is the process by which molecules tend to move from an area of higher concentration to an area of lower concentration is this true or false?
falseOsmosis is the diffusion of water through a semi-permeable membrane.
Is water enters a cell through a cell wall by a process called osmosis true?
Yes. But only through a permeable or semi permeable membraneEDIT: The cell membrane is not itself permeable to water. However there does exist a type of protein pore called an aquaporin in the membrane that can allow water to pass through, driven by diffusion or osmosis.
Would it be true to say that synovial membrane is a true membrane?
false
What does it mean to say most biological membranes are selectively permeable?
Selectively permeability is a property of biological membranes that allows them to regulate the passage of substances across them. In spite of heavy traffic through them, cell membranes are selectively permeable, and substances do not cross the barrier indiscriminately.
The nuclear membrane disintegrates during prophase true or false?
true
Is a membrane called the endocardium covers the heart true or false?
true
