6Which stw hure prevews the plant cell thomn burnsting when placed in a bopotoni
ID: 303221 • Letter: 6
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6Which stw hure prevews the plant cell thomn burnsting when placed in a bopotonic slutio a) Cell wal b) Cell membane (e) Lywosomse 17. Whish type of sohution will cuse ells to swell, or even to burt h Vacuole (a) Isotonic solution b) Ropotonic solution ic) Hypertonic solution d) Osmotise soution 18 Olignsacharides are long chains of liids linked to prosteims and phospholipds 19 Which one of the toling ineriw of theto have monetay pitive charg on the surface of cells (a) Ture b) False (a) Opening of potassium leak channels (b) Activity of the NaK' ATPave te) Opening of voltage gated sodium ehanels d) Opening of voltage gated polassium channels 20i (a) Flipase (b) Spectrin is a protein that contributes to the acymnetris arrangensens of the phospholipid bilayer (e) ScanmNlases d) transerase 21. Glycolipids are only found in the cytoplasmic part of the plasma membrane (a) Tme 22. (b) Falwe is a memberane protein the lie entirely outside on either side of the bilayer and it is covalemly atachod to lipid molecules within the membrane (a) Protein atached (b) Transmemberane peotein (c) Lipid linked (di wonolayer associated a helis 23. Which statement best describes the plasma membrane? (a) It is freely penmeable to all substances (b) t is selectively pecable to certain suhstanoes (c) t is nonpermeable to all substances (d) More than 1 is cormect 24. The net foece driving an wcharged wolecule acress the plasma wenmbrane by passive transport ibs (a) Concestration gradient (b) Charge of the molecule (c) Membrane potential (d) More than one is correct 25 A cell is recognined by other tissse members as "se by its sface (a) Glycoproteins (b) Lipids (c) Cholesterol idi Mewbrane protein 26 lon chanancls are not continuously open and are highly selective (a) True (b) False 27. 27 Initiating an action potential works best at short distances (a) True (b) False 28 The net Aece driving a charged molecule across the plasma membrane by passive transpon is (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) Neurotransmiter (a) True (c) Proteins (d) Glycogern 30 Nerve cells are the only cells with a resting membrane potential (b) FalseExplanation / Answer
16)a. CELL WALL
Cell wall is the rigid and hard outermost layer of the plant cell.
17) b. HYPOTONIC SOLUTION
The solute is in higher concentration inside the cell than that of outside so water will flow from outside to inside of the cell.
18) b. FALSE
Oligosaccharide is the carbohydrate polymer.
19) c. OPENING OF THE VOLTAGE GATED SODIUM CHANNELS
20) a. FLIPPASE
21) a. TRUE
22) c. LIPID LINKED
23) c. SELECTIVELY PERMEABLE TO CERTAIN MEMBRANES
Ions and organic molecules
24) a. CONCENTRATION GRADIENT
Down the concentration gradient
25) a. GLYCOPROTEIN
26) a. TRUE
27) b. FALSE
28) c. MEMBRANE POTENTIAL
29) b. NEUROTRANSMITTER
30) b. FALSE
All cells have resting membrane potential
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