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Which of the following is not a function of membrane proteins?Some act as channels.They determine the fluidity of the membrane.Some will transport glucose.They include docking-marker acceptors.Some act as enzymes.Identify the incorrect statement about the plasma membrane.Cholesterol contributes to its stability.Its lipids may surround CAMs.Its primary components are glycoproteins and cholesterol.Its lipid bilayer is flexible.Its glycocalyx is in contact with ECF.The rate at which "X" can diffuse through a plasma membrane is inversely proportional to thelipid solubility of Xconcentration gradient for Xmolecular weight of Xmembrane's surface arealipid solubility and molecular weight of XWhich statement about gap junctions is incorrect?They consist of protein.They are anchored to plaques on the inside surface of the plasma membrane.They allow materials to pass from one cell into an adjacent cell.They play a role in transmitting electrical activity through the heart.They consist of connexons.Selective permeability of the membrane is primarily determined bypage1image18864 a. membrane phospholipids b. how much cholesterol is present c. the number and type of membrane proteins the charge of the membrane d. none of theseIf a typical body cell is placed into a 1% saline solution, the cell will a. gain more water than it loses. b. will have a higher osmotic pressure than the ECF. c. will have a lower hydrostatic pressure than the ECF. d. will gain and lose water at the same rate. e. will have a lower osmolarity than the saline solution.
An electrical gradientfavors the movement of K+ out of the cell at resting potentialfavors the movement of Na+ into the cell at resting potentialopposes the concentration gradient for Na+ at the equilibrium potential for Na+favors the movement of Cl- out of the cell at resting potentialprevents the active transport of K+ into the cellDuring osmosis,water moves away from the solution with the higher osmotic pressure.water moves into a hypotonic solution.the solute moves against its concentration gradient.all of the above events would occur.none of the above events would occur.Solution 1 has two solutes (A and B) and an osmotic pressure of 250 mOsm. Solution 2 has only one solute (C) and an osmotic pressure of 300 mOsm. If a membrane between these solutions is permeable to only water and B, thenSolution 1 will gain water from solution 2.Solution 2 will gain water from solution 1.Some of solute C will move into solution 1.Solution 1 has a higher osmotic pressure.Solution 1 would be hypertonic to a human cell.Which of the following would not require a carrier?Movement of potassium into the cellMovement of sodium into the cellIodine uptake by thyroid gland cellsGlucose uptake by body cellsNone of the above would require a carrier.With secondary active transport, the movement ofH+ out of a cell by antiport is downhillamino acids into the cell by symport is uphillglucose into a cell by cotransport is downhillH+ is in the same direction as the movement of Na+glucose is in the opposite direction as the movement of Na+The rate of carrier-mediated transport is limited bythe glycocalyxosmolaritytonicitycompetition with other moleculesthe number of protein channels present in the membraneAll of the following transport certain substances from regions of high concentration to low concentration exceptcarriersfacilitated diffusionSGLTGLUTCa2+ pumpWhich pairing has the most closely related items? a. Tight junction, connexonpage2image27552Gap junction, cadherinTight junction, kiss siteGap junction, plaqueDesmosome, claudinWhich answer is true about NET water movement between two solutions that are separated by a semipermeable membrane. a. It will always be toward the solution with the lower osmotic pressure. b. It might be toward the solution with the lower osmotic pressure. c. It will always be toward the solution with the lower hydrostatic pressure. d. It might be toward both solutions at the same time. e. None of the above statements are true.
What sorts of plants will you select for crossing. Describe how allergies, common cold or influenza change the structures of the respiratory system and cause decrease in gas exchange.
Whether ratios are leverage or profitability ratios. If a leverage ratio, is it coverage or capital structure? What is the dissimilarity between the two? If a profitability ratio, examine why it is not completely satisfactory for measuring an organiz..
Suppose you add five micrograms of purified acid phosphatase to the pur acid phosphatase reaction - compute the amount of acid phosphatase in 400 microliters of wheat germ extract
Estimate which type of protein binds to improperly folded or improperly assembled proteins in the ER, holding them there until proper folding occurs?
A projectof the effect of surgical repair or reconstruction on the function of the hip labrum is critical to the advancement of hippreservation surgery,
Assume you place a cell into a solution containing small/non-polar purple dye molecules and observe it under a microscope.
what is the final concentration be in micromolar
Suppose that the 3-loci , each with two alleles determine the difference in height between two homozygous strains of a plant.
Determine which of the following groups can be involved in hydrophobic interactions?
Blindness is an autosomal dominant disorder in puppies. B or b are used to represent the gene that causes blindness. Black Hair Follicular Dysplasia is an autosomal recessive disorder in puppies.
Discuss how many ways can these chromosomes be assorted into gametes and how many different chromosome combinations are possible when crossing two unrelated flies?
Suppose that P is always completely dominant to any number of p's, and that the locus is close to the centromere. What is an expected ratio of purple:white in the progeny of the next crosses.
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