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Final Exam Prep Module 3 9 pages of MC questions i made while studying, all from module three in course notes, a few from comments on the course CD, no answers provided but follows in order of the course notes so it should be easy to look them up.

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University of Waterloo
BIOL 130
Niels C Bols

Biology 130- Module 3- Practice Multiple Choice Questions Plasma membranes: a) Enclose entire cell b) Have openings for osmosis c) Allow nothing to enter Membrane functions do not include: a) Signal transduction b) Energy transduction c) DNA transduction In a membrane proteins penetrate: a) Part way into lipid bilayer b) Cannot penetrate lipid bilayer c) Into or through lipid bilayer Phospholipids contain a ____ backbone, and are phosphoglycerides. a) Glycerol b) Glycoglycerol c) GAGs Serine is a phosphoglyceride which produces the: a) Cell suicide signal b) Cell drinking signal c) Cell maturation signal Sphingolipids contain: a) Amino acid and long hydrocarbon chain b) Amino acid and glucose molecules c) Amino acid and protein False about cholesterol: a) 50% of animal plasma membranes b) Helps control cell membrane fluidity c) Can create cell membranes from nothing Glycoproteins are present in: a) Chitin and gags of ECM b) Oligosaccharides c) Glucose creation Which is not a class of membrane proteins: a) Integral b) Pretegral c) Peripheral Intergral proteins: a) Pass through lipid bilayer b) Cannot penetrate lipid bilayer c) Are not a true protein Membranes allow proteins to: a) Be associated both covalently and non convalently b) Only associated if they penetrate lipid bilayer c) Associate only non covalently The G-protein Ras is a: a) Integral protein b) Peripheral protein c) Lipid-anchored protein Basal plasma membrane is on the: a) Bottom of cell away from surface b) Side of the cell binding to neighbouring cells c) Top of the cell, receptor to most outward signals Which set of cell junctions are similar: a) Adherens-tight b) Gap-desmosomes c) Adherens-desmosomes Cadherins are a family of: a) Proteins b) Glycol-proteins c) Lipids On a TEM a tight junction appears as: a) 5 layers b) 4 layers c) 3 layers Netflux of movement across a membrane: a) Is an equilibrium b) Occurs when influx or efflux is greater than the other c) is the total of incoming and outgoing materials An electrochemical gradient affects: a) the size of the membrane b) diffusion across membrane c) only the movement of electric charges on the membrane Which statement is false: a) a cell that shrinks is hypotonic b) a cell that expands is isotonic c) a cell that remains the same is isotonic Tonicity depends upon: a) permeability of membrane b) thickness of membrane c) membranes structure Active diffusion involves: a) ATP b) Protein carrier c) Both a and b Partition coefficient equation is (C=concentration): a) C in oil/ C in water b) C in water/ C in fat c) C in oil/ C in fat Ions of large polar molecues cannot diffuse through lipid bilayer: a) True b) False Chemical gated channels state depends upon: a) Charge of ions on either side b) Chemicals the gate is made of c) Binding of particular substance Facilitated diffusion: a) Changes direction substance would cross a membrane b) Involves the binding to a membrane spanning protein c) Allows anything to cross the membrane Active transport a) An example is sodium-potassium pump b) Can be completed without external energy c) Never changes original direction of a substance across the membrane Sodium-pottasium pump is a: a) Electrochemical pump b) Electrogamete pump c) Electrogenic pump ATP becomes _____ during the sodium-pottasium pump transport cycle: a) Hydrolyzed ATPase b) Unhydrolyzed ATPase c) Hydrolyzed ATP + Bulk phase endocytosis is also called: a) Phagocytosis b) Pinocytosis c) Cell eating A ligand is: a) A specialized protein b) A lipoprotein c) Any molecule that can bind a receptor Endocytosis of hormones results in: a) Always cell growth b) Protein proliferation c) Destruction of receptor Which is not a type of endosome: a) First endosome b) Early endosome c) Late endosome Coated pits contain the proteins: a) ATP, adaptins, AGD b) Clathrin, adaptins, dynamin c) Catrin, adatin, dionin Receptors in house keeping endocytosis are: a) Recycled b) Destroyed c) Continue with lysosome and join late endosome _____ prevents cholesterol to travel free in blood: a) Bipolar characteristics b) Hydrophobicity c) Photosynthetic
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