16. Which structure prevents the plant cell from bursting when placed in a hypot

Question

16. Which structure prevents the plant cell from bursting when placed in a hypotonic solution? (a) Cell wall (c) Lysosome (b) Cell membrane 17. Which type of solution will cause cells to swell, or even to burst? (d) Vacuole (c) Hypertonic solution (d) Osmotic solution (a) Isotonic solution (b) Hypotonic solution 18. Oligosaccharides are long chains of lipids linked to proteins and phospholipids on the surface of cells (a) Ture 19. Which one of the following can cause the interior of the neuron to have a momentary positive charge? (b) False (a) Opening of potassium leak channels (b) Activity of the Nat/K' ATPase (c) Opening of voltage gated sodium channels (d) Opening of voltage gated potassium channels (a) Flippase (b) Spectrin is a protein that contributes to the asymmetric arrangement of the phospholipid bilayern (c) Scarmblases (d) transferase 21. Glycolipids are only found in the cytoplasmic part of the plasma membrane (a) True (b) False 22. is a membrane protein the lie entirely outside on either side of the bilayer and it is covalently attached to lipid molecules within the membrane (a) Protein attached (b) Transmembrane protein (c) Lipid-linked (d) monolayer associated ? helix 23. Which statement best describes the plasma membrane? (a) It is freely permeable to all substances (b) It is selectively permeable to certain substances (c) It is nonpermeable to all substances (d) More than 1 is correct net force driving an uncharged molecule across the plasma membrane by passive transport is: (a) Concentration gradient (c) Membrane potential (d) More than one is correct (b) Charge of the molecule 25. A cell is recognized by other tissue members as "self" by its surface (a) Glycoproteins (c) Cholesterol (b) Lipids (a) True (a) True (a) Concentration gradient (d) Membrane proteins 26. Ion channels are not continuously open and are highly selective. (b) False 27. Initiating an action potential works best at short distances. (b) False 28. The net force driving a charged molecule across the plasma membrane by passive transport is (c) Membrane potential (d) More than one is correct (b) Charge of the molecule 29. Chemical signal released by nerve cells is (a) Ligand (c) Proteins (d) Glycogen 30. Nerve cells are the only cells with a resting membrane potential? (b) Neurotransmitter (a) True (b) False

Explanation / Answer

16. (a) Cell Wall

Explaination - Plant cell enclosed by a rigid cell wall. When plant cell is placed in a hypotonic solution, it takes up water by osmosis and starts swelling. The cell wall prevents it from bursting due to its rigidity.

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