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 Which enzyme ensures there is an equal distribution of newly synthesized phospholipids across the (c) Act as a membrane protein receptor (d) Act as a membrane gated channel protein 3. (c) Glycocalyx (d) Cell cortex 4. membrane? (a) Flippase (b) Spectrin (c) Scarmblases (d) transferase 5. Carbohydrate layer on the plasma membrane: (c) Gives a cell its distinctive characteristics (d) All are correct (b) Cell Recognition 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 Na+ pumps function is to: (a) Pump Na+ into the cell (b) Pump Na+ out of the cell Ca+ pump include all of the following EXCEPT (a) It is an ATPase (b) Pump Ca+ into the cell (c) Glycocalyx (d) Porins 7. (c) pump Na+ into and out of the cell (d) Pump K+ out of the cell 8. (c) Pump Ca+ out of the cell (d) Pump Cat against its concentration gradient 9. The probability of a)chanical gated channel being open is controlled by the membrane potential. (a) Ligand gated (b) Voltage gated (d) Transmitter-gated 10. The opening of a channel is controlled by the binding of some molecules to the channel (a) Ligand gated (b) Voltage gated (c) Mechanical gated (d) Transmitter-gated 11. The opening of channel is controlled by a mechanical force applied to the channel (a) Ligand (b) Voltage gated (c) Mechanical gated (d) Transmitter-gated 12. The shape and mechanical properties of plant, yeast, and bacteria cells is established bya (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) Nucleic acids (e) Cholesterol (a) Proteins (b) Phospholipids Which molecule in animal plasma membranes reduces the permeability of the membrane to molecules? 14. most biological (c) Glycolipids (d) Nucleic acids (c) Cholesterol (a) Proteins b) Phospholipids phospholipid bilayer has a solid consistency? (b) False (a) True

Explanation / Answer

1. d-- none of these answers are correct

2. d-- acts as a membrane gated channel proteins.

3. d-- cell cortex

4. c-- scramblase

5. d-- all are correct

6. b-- spectrin

7. b-- pumps Na+ out of the cell

8. b-- pumps Ca+ into the cell

9. b-- voltage gated.

10. a-- ligand gated

11. c-- mechanical gated

12. d-- cell wall

13. d-- nucleic acids

14. e-- cholestrol

15. false --it has a consistency like vegetable oil

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