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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.
There is 2-possible ways of inserting a gene into E.Coli that functions in converting a waste into an energy source.
Describe the structure and function of receptors involved in taste and olfaction. Describe how and why each of the following situations would affect someone's perception of flavor.
Describe why people confined to wheelchairs as of paralyzed lower limbs have thin, weak bones in their thighs and legs.
A nearsighted woman (Nn) with hazel eyes (Hh) marries the man with normal vision and hazel eyes (Hh). Their three children all have blue eyes and normal vision. What is the possibility that their next child will have blue eyes and be nearsight.
What are the two exceptions to the general rule that all cells in the human body contain a complete, identical copy, of a person's DNA?
Does this indicate that our original estimate of 350 individuals was too low or too high? Explain your answer in terms of the principles that underlie mark recapture method.
A 5.0 mL aliquot of a stock tryptophan solution was diluted by adding 95 mL of water. The absorbance of that diluted solution was measured at 280 nm as 0.055 absorbance units.
Determine the percentage of offspring displaying each trait. If a single, diploid G2 nucleus in an ascus contains 400 nanograms (ng) of DNA, after that a single ascospore nucleus of this species should contain how much DNA (ng), carried on how many c..
Would you expect Dissolved Oxygen in water taken from the stream entering a lake to be higher or lower than Dissolved Oxygen taken from the lake itself? Give details.
Construct a hypothesis to explain the observation? From what you know about plants, if we were to place one of the test tube and beaker combinations in front of a green light, what would happen?
What SARS viral proteins are made using the frameshifting? Is there only one SARS viral protein made using frameshifting or are there many proteins made using frameshifting?
For both visual and blind predators, estimate what p will be by the 20th generation. If p > 1, then at what generation was one reached?
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