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Is it true or false that ribosomes are permeable to the nuclear membrane?
Wiki User
∙ 14y ago
TRUE
Wiki User
∙ 14y ago
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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.
The process that relies on a concentration gradient of protons?
Chemiosmosis, the diffusion of hydrogen ions on a selectively permeable membrane.
The lipid bilayer is made up of a triple layer of phospholipids?
Cell membrane is made up of lipid bi layer. It is selectively permeable to some substances only. It plays very important role in integrity of the cell.
Ribosomes stud the surface of rough endoplasmic reticulum true or false?
True. Ribosomes stud the surface of rough endoplasmic reticulum.
Is it true that the Ribosomes endoplasmic recticulum and the Golgi apparatus functionally act in sequence to synthesize and modify proteins for a secretory use only never for use by cell?
false; integral cell membrane proteins are also synthesized this way
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
True or false Ribosomes differ from other organelles in that they are membrane bound?
FalseRibosmes are naked organelles.Every other organelles except cell wall are membrane bound
The nuclear membrane disintegrates during prophase true or false?
true
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.
Do protists have a distinct nucleus that is separated from the cytoplasm by the nuclear membrane?
yes
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.
True or false The cell membrane is selectively permeable?
True. Permeable means that things are able to pass through something, and selective indicates that certain things are able to pass through.
The process that relies on a concentration gradient of protons?
Chemiosmosis, the diffusion of hydrogen ions on a selectively permeable membrane.
Are membranes selectively permeable if they allow only certain substances to move across them?
False.
True or False Do Ribosomes carry out lipid synthesis?
False. They carry out protein synthesis.
Is fusion a type of chemical reaction?
False
The lipid bilayer is made up of a triple layer of phospholipids?
Cell membrane is made up of lipid bi layer. It is selectively permeable to some substances only. It plays very important role in integrity of the cell.
