Concept explainers
To describe: The two ways in which integral proteins are associated with the plasma membrane.
Introduction: The fluid mosaic model describes the membrane as a phospholipid bilayer in which proteins are embedded to form a mosaic-like pattern. The bilayer ensures the separation of outer content from the content inside the cell. The membrane is semi-fluidic in nature, and the proteins, which are embedded within the membrane, are integral proteins.
To explain: The mechanism of the association of the peripheral proteins with the membrane.
Introduction: The fluid mosaic model describes the membrane as a phospholipid bilayer in which proteins are embedded to form a mosaic-like pattern. The bilayer ensures the separation of outer content from the content inside the cell. The membrane is semi-fluidic in nature, and the proteins, which are embedded within the membrane, are integral proteins.
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BIOLOGY (LL)
- Describe the various types of specialized domains that can be established in the plasma membrane? what is the general consequence of these domains (ie why form them )?arrow_forwardWhat is the function of Peripheral membrane proteins?arrow_forwarda) Give the two main membrane proteins.b) State a function each of the mentioned protins. c) Explain why change in pH can affect the function of the proteins.arrow_forward
- How long is a typical transmembrane domain, and what is the chemical composition of the amino acids found within the transmembrane domain of a single-spanning integral membrane protein? A~ 20 amino acids; hydrophobic amino acidsB~ 100 amino acids, amphipathic amino acidsC~ 10 amino acids; polar, charged amino acids D~ 50 amino acids, polar, uncharged amino acidsarrow_forwardWhat are the multiple membrane proteins? Describe each of their function.arrow_forwardExplain how the chemical composition/structure of the plasma membrane allows for it to be selectively permeable. What does this information tell you about the chemical composition of an integral protein versus a peripheral protein? How do these differences allow for their different functions?arrow_forward
- Why is the current model of Plasma membrane known as the “Fluid Mosaic Model”? Whatis the fluid, and in what sense is it fluid? What makes up the mosaic?arrow_forwardWhich functional class of membrane proteins allows water and small ions to cross the plasma membrane?arrow_forwardwhere is Peripheral membrane protein made and how does it transfer to the membrane?arrow_forward
- Describe transmembrane proteins and explain the following roles that they play in the plasma membrane: receptor, enzyme, ion channel, carrier protein, cell-identity marker, and cell-adhesion molecule.arrow_forwardWhich of the following statements is true of membrane proteins? a) They are suspended on the surface of the membrane. b) They are partly embedded in the bilayer c) They span across the bilayer and project from both sides d) Any of these are true, depending on the specific membrane protein.arrow_forwardWhich among the following defines GPI anchored proteins? 1)Integral proteins of the plasma membrane 2)Peripheral proteins of the plasma membrane 3)Proteins that bind to ion-gated channels in the plasma membrane 4)Proteins which randomly bind to lipids of the plasma membranearrow_forward
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