Multiple Choice (2pts) Carbohydrate layer on the plasma membrane includes all of

Question

Multiple Choice (2pts) Carbohydrate layer on the plasma membrane includes all of the following except: (a) Adhesion (b) Recognition 1. (c) Gives a cell its distinctive characteristics (d) None of these answers are correct 2. Bacteriorhodopsin: (a) Act as a membrane transport protein (b) Act as a membrane channel protein Which structures add to the fluidity of the plasma membrane: (a) Carbohydrates (b) ATP (c) Act as a membrane protein receptor (d) Act as a membrane gated channel protein 3. (c) Glycocalyx (d) Cell cortex 4. Which enzyme ensures there is an equal distribution of newly synthesized phospholipids across the (a) Flippase (c) Scarmblases (d) transferase (b) Spectrin Carbohydrate layer on the plasma membrane: (a) Protection (b) Cell Recognition 5. (c) Gives a cell its distinctive characteristics (d) All are correct protein 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 (c) Glycocalyx (d) Porins Na+ pumps function is to: (a) Pump Na+ into the cell (b) Pump Na+ out of the cell 7. (c) pump Nat into and out of the cell (d) Pump K+ out of the cell 8. Ca+ pump include all of the following EXCEPT (c) Pump Ca+ out of the cell (a) It is an ATPase (b) Pump Ca+ into the cell The probability of a (a) Ligand gated (b) Voltage gated (d) Pump Ca+ against its concentration gradient channel being open is controlled by the membrane potential. (c) Mechanical gated (d) Transmitter-gated channel is controlled by the binding of some molecules to the channel. 10. The opening of a 11. The opening of 12. The shape and mechanical properties of plant, yeast, and bacteria cells is established by a (a) Ligand gated (b) Vokage gated (c) Mechanical gated (d) Transmitter-gated channel is controlled by a mechanical force applied to the channel (a) Ligand gat (b) Voltage gated (e) Mechanical gated (d) Transmitter-gated (a) Plasma membrane (b) Cell membrane (c) Plasma wall (d) Cell wall 13. Which of the following molecules would NOT be found in animal plasma membranes? (c) Glycolipids (d) Nucleie acids (a) Proteins (b) Phospholipids (e) Cholesterol 14. Which molecule in animal plasma membranes reduses the permeability of the membrane to mhost biolog molecules? (a) Proteins (c) Glycolipids (d) Nucleie acids (c) Cholesterol (b) Phospholipids phospholipid bilayer has a solid consistency? (b) False (a) True

Explanation / Answer

1) The plasma membrane is made up of proteins, lipids and carbohydrates. The major component is lipid bilayer interspersed with receptor proteins. Certain carbohydrate chains like glycoproteins and glycolipids extends out from the plasma membrane. These are responsible for recognition and adhesion. The distinctive characteristics of the cell are given by its protein components. Therefore, the answer for this question is option c.

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