2.D00F4F5DDqEModel 2 - Selectively Permeable Cell Membrane and Simples lockDiffusionExtracellular Fluidm Cytoplasmic Fluidwwwww wExtracellular Fluidmwwwy Cytoplasmic Fluidwwwmwwwwwwwwwwmwwwwwmwywwwwwwwmwwww.wwwwwwwwmwwwwYwwwwwOCytoplasmic FluidExtracellular FluidExtracellular FluidCytoplasmic Fluidwwwwwww wwwm mwwwwwwwwwwとwwwwwwwwThe four diagrams in Model 2 illustrate movement of four types of substances (see the table inModel 1 - the symbols in this model correspond with those from the previous model) across aphospholipid bilayer (extracellular fluid on left and cytoplasmic fluid on right).3. Label each diagram in Model 2 with the ion or molecule type (i.e., large/small,polar/nonpolar/charged) based on the information (including the symbols) in Model 1.4. Assume the substances in Model 2 were on only one side of the membrane to start. Thediagrams illustrate what would happen after some time has passed.Which substances appear to be completely blocked by the membrane?a.b. Which substances appear to be able to pass freely through the membrane?C.Which substances appear to pass through the membrane with some difficulty?d. Urea appears to pass through the membrane more easily than glucose. What characteristic ofurea might help explain this observation?Diffusion is the process of molecules traveling across a membrane barrier from a location of highconcentration to a location of low concentration ("down their concentration gradient"). The drivingforce for this process is simply the natural movement of the molecules in random directions.Whether the molecules are allowed to cross or not is due to the polarity of the molecules themselvesand their size. No energy is needed during simple diffusion, so it is considered a type of passivetransport. ThisDoes the above description match with what we’ve discussed in lecture?process is illustrated in Model 2 for several types of molecules. Type 1 IonsType 2 MoleculesType 3 MoleculesType 4 MoleculesGlucose:Molecular oxygen (0,):Potassium: K+Water:O-H.Sodium: Na++,HUrea:Carbon dioxide (CO,):H.OHHCalcium: Ca2+0=C=0OHOHC.Chloride: CI eH2NNH2H.PolarpolarfolarSmallnonpolarsmalllargeSmall

Selectively permeable membrane This is a membrane that has the ability to allow one few materials…

3. Label each diagram in Model 2 with the ion or molecule type (i.e., large/small, polar/nonpolar/charged) based on the information (including the symbols) in Model 1. 4. Assume the substances in Model 2 were on only one side of the membrane to start. The diagrams illustrate what would happen after some time has passed. Which substances appear to be completely blocked by the membrane? а. b. Which substances appear to be able to pass freely through the membrane? Which substances appear to pass through the membrane with some difficulty? С. d. Urea appears to pass through the membrane more easily than glucose. What characteristic of urea might help explain this observation?

3. Label each diagram in Model 2 with the ion or molecule type (i.e., large/small, polar/nonpolar/charged) based on the information (including the symbols) in Model 1. 4. Assume the substances in Model 2 were on only one side of the membrane to start. The diagrams illustrate what would happen after some time has passed. Which substances appear to be completely blocked by the membrane? а. b. Which substances appear to be able to pass freely through the membrane? Which substances appear to pass through the membrane with some difficulty? С. d. Urea appears to pass through the membrane more easily than glucose. What characteristic of urea might help explain this observation?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter2: Cells And Cell Division

Section: Chapter Questions

Problem 2QP: Assign a function(s) to the following cellular structures: a. plasma membrane b. mitochondrion c....

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