ch06 Student 80 of the extracellular fluid is termed interstitial fluid True False How much of the total body water content is in the intracellular compartment A 50 B 67 C 33 D 80 The majority of water within the body is found in the A intracellular compartment B extracellular compartment C blood plasma D interstitial fluid How much of the extracellular fluid makes up the blood plasma A 33 B 92 C 20 D 50 The extracellular matrix is made up of collagen elastin and a gel like ground substance True False comprise an important family of enzymes that can break down extracellular matrix proteins but require a zinc ion cofactor A Matrix metallohydrolases B Matrix phosphokinases C Matrix metalloproteinases D None of these choices are correct What cofactor do matrix metalloproteinases need to be functional A calcium B copper C chromium D zinc are a class of glycoproteins that bind to components in the extracellular matrix thereby acting as adhesion molecules between cells and the matrix A Glycocalyces B Aquaporins C Desmosomes D Integrins Matrix metalloproteinases A produce the basal lamina B synthesize collagen in the extracellular matrix C may be active in invasive cancer cells D synthesize proteoglycans in the extracellular matrix 1 2 3 4 5 6 7 8 9 10 Proteins that extend from the cytoskeleton within the cell through the plasma membrane and into the extracellular matrix are A lysosomal proteins B metallo proteins C receptor proteins D integrin proteins 11 Which of the following is NOT a function of integrins A glue components of the matrix B communicate between the intracellular and extracellular compartments C allow diffusion to occur through the plasma membrane D establish cell polarity 12 What structures affect cell motility adhesion and proliferation 13 Osmosis and simple diffusion do NOT require the actions of carrier proteins 14 Active transport proceeds when energy is expended 15 is a term which describes a membrane that allows only certain molecules to A basal lamina B integrins C collagen IV D proteoglycans True False True False penetrate it A Selectively permeable B Permeable C Porous D Countertransport A Facilitated diffusion B Bulk C Simple diffusion D Active 16 transport does not require membrane proteins 17 Passive transport of water is known as A filtration B osmosis C facilitated diffusion D a water pump 18 Active transport A utilizes energy B cannot transport molecules against a concentration gradient C cannot be saturated D requires cofactors 19 Simple diffusion is the net diffusion of a solvent 20 Diffusion the entropy of a solution True False A decreases B increases C does not change 21 Why are cells in body organs generally within 100 m of a blood capillary A to decrease mean diffusion time B to increase mean diffusion time C so that larger particles can diffuse more easily D a larger distance maximizes entropy 22 The process in which waste molecules are removed from the blood by having them diffuse through an artificial porous membrane is called dialysis True False 23 A solution consists of a which dissolves the A solvent solute B solvent solid C solute solvent D liquid solid 24 Dialysis uses the process of A facilitated diffusion B primary active transport C simple diffusion D secondary active transport True False A osmosis B active transport C diffusion D protein channels A sodium B potassium C calcium D chloride A water tubes B aqueducts C aquaporins D streams A O2 B small charged particles C large polar molecules D All of these choices are correct A polar B aquaporins C hypertonic D gated 25 Gas exchange between the cells and extracellular fluid utilizes active transport 26 Hydrophobic molecules usually enter a cell via 27 Individuals suffering from cystic fibrosis have defective ion channels 28 Channels present in the membranes of some cells that allow rapid movement of water are called 29 Which of the following is able to passively penetrate the plasma membrane 30 Ion channels that can be opened by physiological stimuli are said to be 31 How do small ions like Na of K pass through the plasma membrane A gated channels B ion channels C carrier proteins D simple diffusion 32 The rate of diffusion increases as the concentration gradient increases 33 Diffusion is more rapid in cells with microvilli compared to cells lacking microvilli True False True False 34 The rate of diffusion is influenced by A the concentration gradient B membrane permeability C membrane surface area D All of these choices are correct 35 Solutes that cannot freely pass through a membrane are said to be 36 Which of the following cells do NOT normally have many aquaporins in their plasma membranes A hypertonic B osmotically inactive C osmotically active D selectively permeable A kidneys B lungs C salivary glands D skin many permanent aquaporins True False True False True False A water B solute C solvent D matrix True False A 90 B 180 C 6 02 1023 D 360 37 Because the kidneys are so important for water balance the plasma membranes of kidney cells have 38 The osmotic pressure exerted by a cell would decrease if the cell synthesized more proteins 39 Edema will result if a person has an abnormally low concentration of plasma proteins 40 The osmotic pressure of a solution is directly related to its concentration 41 Osmotic pressure is a measure of the force needed to A open aquaporins B cause osmosis C stop osmosis D stop edema 42 A one molar solution would contain 6 02 1023 molecules of solute 43 A 0 5M glucose molecular weight 180g contains grams of glucose per liter 44 A six molar sucrose molecular weight 342g solution would contain A 57g sucrose per liter B 342g sucrose per liter C 1026g sucrose per liter D 2052g sucrose per liter 45 A one molal NaCl solution has the same osmolality as a one molal glucose solution 46 g of sucrose molecular weight 342g would be added to 1L of water to produce a 2 5 47 One mole of solute per liter depresses the freezing point of water by 1 86 C True False Osm solution A 342 B 500 C 855 D 2 5 True False 48 Plasma freezes at A 1 86 C B 1 00 C C 0 56 C D 0 00 C 49 The osmolality of plasma is A 0 3 Osm B 0 1 Osm C 1 0 Osm D 2 0 Osm True False A 0 56 C B 1 12 C C 1 68 C D 2 24 C True False True False A lyse B crenate C not change D swell A decrease B increase C remain constant 50 Freezing point depression is a measure of osmolality 51 A solution with an osmolality four times greater than plasma would freeze at 52 Hypertonic solutions stimulate cellular lysis 53 A 10
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