Multiple Choice (2pts) . Carbohydrate layer on the plasma membeane includes all

Question

Multiple Choice (2pts) . Carbohydrate layer on the plasma membeane includes all of the following except (a) Adhesion (b) Recognition 2. Bacteriorhodopsin: (c) Gives a cell its distinctive characteristics (d) None of these answers are correct (a) Act as a membrane transpom protein (e) Act as a membrane protein recapiox (b) Act as a membrane channel protein (d) Act as a membrane gated channel protein 3. Which structures add to the fluidity of the plasma membrane (a) Carbohydrates o cadenone of the above (b) ATP Which enzyme ensures there is an equal distribution of newly synthesized phospholipids across the membrane? (a) Flippase (b) Spectrin Carbohydrate layer on the plasma membrane: (a) Protection (b) Cell Recognition (d) Cell cortex 4. (c) Scarmblases (d) transferase 5. (c) Gives a cell its distinctive characteristics (d) All are correct 6. protein is a major component of the cortex in RBCs. Mutations in this protein develop a foem of anemia that can cause to RBCs to develop a flatened shape, making them extremely fragile (a) Leetin (b) Spectrin (c) Glycocalyx (d) Porins 7. Na+ pumps function is to (a) Pump Na+ into the cell (b) Pump Na+ out of the cell (c) pump Nat into and out of the cell (d) Pump K+ out of the cell 8. Cat pump include all of the following EXCEPT (c) Pump Cat out of the cell (a) It is an ATPase (b) Pump Car into the cell (d) Pump Cat against its concentration gradient channel being open is controlled by the membeane potential. 9. The probability of s(c) Mechanical gated (d) Transmitter-gated (e) Mechanical gated (a) Ligand gated (b) Voltage gated channel is controlled by the binding of some molecules to the chanel. 10. The opening of a 11. The opening of achannel is controlled by a mechanical force applied to the channel 12 Te shpe and meccaellsi tabdisolod b a (a) Ligand gated (b) Voltage gated (d) Transmitter-gated (c) Mechanical gated (a) Ligand gated (b) Voltage 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) Nucleic acids (e) Cholesterol (a) Proteins (b) Phospholipids 14. Which molecule in animal plasma membranes reduces the permeability of the membrane to most bic molecules? (a) Proteins (e) Cholestercl (c) Glycolipids (d) Nucleic acids (b) Phospholipids 13. The phopholpid bilaycer has a solid consistemcy? (b) False (a) True

Explanation / Answer

1) correct answer is "b"

The glycocalyx is an essential component in all cells, particularly epithelia with microvilli. recent data recommends that the glycocalyx takes an interest in cell adhesion, lymphocyte homing, and many others.

Carbohydrates are important in the part of cell-cell recognition in eukaryotes; they are situated on the surface of the cell where they recognize host cells and offer data, viruses that bind to cells utilizing these receptors cause an infection.

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2) the correct answer is "a"

It acts as a proton pump; that is, it catches the light energy and uses it to move protons over the layer out of the cell. The subsequent proton inclination is in this manner changed over into concoction energy.

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3) the correct answer is "e".

this plasma membrane is usually a fluid combination of phospholipids, cholesterol, and proteins.

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4) the correct answer is "a"

Flippases are transmembrane lipid transporter proteins situated in the layer in charge of supporting the movement of phospholipids between the two leaflets that make a cell's membrane.

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5) the correct answer is "d".

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