4) Omoic solution 8 Oigsaccharides re long chains of lipids linknd to po and pho

Question

4) Omoic solution 8 Oigsaccharides re long chains of lipids linknd to po and phospholipids on the surface of cells can causc the intcrior of the neuro to have a momentary positive charge (a) Ture b) False 19 Whach one of the follerwing a) Opening of potassium leak channcls b) Activity of the NaK ATPas (c) Opening of voltage gatod sodium channcls d) Opening of soltage gated potassium channcls 20 is a protcin that coetributes to the avymmetric arrangement of the phospholipid bilayer (a) Flippasc (b) Spectrin (c) Scamblases (d) transferasc 21. Glycolipids are only found in the cytoplasmic part of the plasma membrane (a) True (b) False is a membrane protcin the lie entirely outside on either side of the bilayer and it is covalently attached to lipid molecules within the membrane (a) Protcin atached (b) Transmembrane protein Which statement best describes the plasma membrane (a) It is freely permeable to all substance (b) It is selectively permeable to certain substances (c) It is nonpermeable to all substances (d) More than 1 is correct c)Lipid-linkod (d) monolayer associated ? helix 23 24. The net force driving an uncharged molecule across the plasma membrane by passive transport is (a) Concentration gradient (b) Charge of the molecule (c) Membrane potential d) More than one is correct 25 A cell is recognized by other tissue members as "self" by its surface (a) Glycoproteins (b) Lipids (c) Cholesterol (d) Membrane proteins 26. lon channels are not continuously open and are highly selective (b) False (b) False 28. The net force driving a charged molecule across the plasma membrane by passive transport is (a) True 27. Initiating an action potential works best at short distances (a) True (a) Concentration gradient (b) Charge of the molecule (c) Membrane potential d) More than one is correct 29 Chemical signal released by nerve cells is (a) Ligand (b) Neurotransmitter (c) Proteins (d) Glycogen 10. Nerve cells are the only cells with a resting membrane potential? (a) True (b) False

Explanation / Answer

Que 18

Ans:

Oligosaccharides are long chains of lipids linked to proteins and phospholipids on the surface of the cells: False.

Explanation:

- Carbohydrates are classified as Monosaccharides, Oligosaccharides and Polysaccharides.

- Oligosaccharides are polymers made up of two to ten monosaccharide units joined together by glycosidic linkages.

- The most abundant are the disaccharides, with two monosaccharide units.

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