on the plas Actas a owembrane gated channel peoteis Whichadd so the Buidity of t
ID: 303247 • Letter: O
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on the plas Actas a owembrane gated channel peoteis Whichadd so the Buidity of the plasma embrane Which onyme nures there is an eqsal distribution of newly symhesized phoupholipids across e e) Scarmhlases d) transfeease S Carbohydrate layer on the plasma mensbrane a cell its distinctive charcteristics (h) Cell Recognition (d) All are conrect peotein is a major component of the cortex in RBCs Mutations in this protein develop a form of anemia that can cause to RBCs to develop a flattened shape, making them extremely fragile. (a) Lectin (b) Spectrin (d) Porins 7. Na+ pumps function is to: (a) Pump Na+ into the cell (b) Pamp Na+ out of the cell (c) pump Na+ into and out of the cell (d) Pump K+ out of the cell 8. Ca+ pump include all of the following ExXCEPT (a) It is an ATPase (c) Pump Cat out of the cell (b) Pump Cat into the cell (d) Pump Cat against its concentration gradient channel being open is controlled by the membrane potential. channel is controlled by the binding of some molecules to the channel. channel is controlled by a mechanical force applied to the channel 9. The probability of a (a) Ligand gated (b) Voltage gated (c) Mechanical gated (d) Transmitter-gated 10. The opening of a (a) Ligand gated (e) Mechanical gated (d) Transmitter-gated (b) Voltage gated I1. The opening ofa (a) Ligand gated (b) Voltage gated (c) Mechanical gated 12. The shape and mechanical properties of plant, yeast, and bacteria cells is established by a (a) Plasma membrand (c) Plasma wall (d) Cell wall (b) Cell membrane 13. Which of the following molecules would NOT be found in animal plasma membranes? (c) Glycolipids (d) Nucleic acids (e) Cholesterol (a) Proteins (b) Phospholipids 14. Which molecule in animal plasma membranes reduces the permeability of the membrane to most biologic molecules? (a) Proteins (c) Glycolipids (e) Cholesterol (d) Nucleic acids 15. The phospholipid bilayer has a solid consistency? (b) False (b) Phospholipids (a) TrueExplanation / Answer
4.Flippases are responsible for equal distribution of newly synthesized phopsholipids across the membrane.
5.carbohydrate layer on plasma membrane gives protection to the cells and also helpful in cell recognition.
6.spectrin is the major part of the cortex in RBC.
7.The sodium pump (sodium potassium ATPase) is an enzyme found in the membrane of all animal cells. Its job is to move NA+ out of the cell and K+ in the cell against their concentration gradient.
8. c) It doesnto help in pumping ca out of the cell.
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