The fluid mosaic model describes the structure of the plasma membrane. Embedded within the plasma membrane are proteins and carbohydrates that contribute to the term mosaic. Carbohydrates on the surface of red blood cells are what determines ABO blood type. These carbohydrates are important for O Cell identification Active transport Diffusion Stability

The fluid mosaic model describes the structure of the plasma membrane. Embedded within the plasma membrane are proteins and carbohydrates that contribute to the term mosaic. Carbohydrates on the surface of red blood cells are what determines ABO blood type. These carbohydrates are important for O Cell identification Active transport Diffusion Stability

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter3: Cell Structure And Function

Section: Chapter Questions

Problem 13RQ: The principal force driving movement in diffusion is______. a. temperature b. particle size c....

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Peripheral proteins are membrane proteins that... a. attach to integral proteins b. insert into the plasma membranec. include glycoproteins on intracellular surfaced. all of the abovee. none of the above
The classic demonstration that cell plasma membranes are composed ofbilayers depends on the following kinds of data:• The membrane lipids from 4.74 x 109 erythrocytes will form a monolayerof area 0.89 m2 when spread on a water surface.• The surface of one erythrocyte is approximately 100 μm2 in area.Show that these data can be accounted for only if the erythrocyte membraneis a bilayer.
a. integral memebrane protein that crosses membrane multiple time b. lipid-linked membrane proteins c. peripheral memebrane protein d. integral memebrane protein that crosses membrane ince
The classic demonstration that cell plasma membranes are composed ofbilayers depends on the following kinds of data:• The membrane lipids from 4.74 x 109erythrocytes will form a monolayer of area 0.89 m2when spread on a water surface.• The surface of one erythrocyte is approximately 100 μm2in area. Show that these data can be accounted for only if the erythrocyte membrane is a bilayer.
Erythrocyte glucose transporter is an example ofa) Ion driven active transportb) Facilitated diffusionc) Active transportd) Simple diffusion
The plasma membrane is an effective barrier to molecularmovement across it, yet many substances do enter and leave thecell. Explain the mechanisms through which this is accomplished.
What is the Description and Examples in the body of these Cell transport? Explain in 2-3 sentencesDescription:Examples in the body: 1. Bulk Transport 2. Phagocytosis 3. Pinocytosis 4. Receptor-Mediated Endocytosis
Many biological tissues have layers with extracellular matrix components and different orientations of these components. As a result, diffusion coefficients vary from region to region. Consider the steady-state, one-dimensional diffusion of a protein across a tissue that consists of a cellular phase and an acellular phase (like an artery wall consisting of a layer of smooth muscle cells and a layer of elastic lamina. Assume no reactions occur in either layer. The protein diffusion coefficients in the layers (1 and 2) are Di,1 and Di,2. The concentration at one edge is (x = 0) Ci = C0; on the other edge (x = L1 + L2 = L) Ci = CL. Assume that all partition coefficients in both layers are equal to 1. Use the figure below to help. Determine (A)the concentration as a function of position x, (B) the flux of the protein solute across the tissue, and (C) the effective diffusion coefficient if the system is modeled as a single layer.
Only typed explaination otherwise leave it Carrier proteins that bind to substances to move them through the membrane and proteins that form pores or channels to allow passage of substances through the membrane are collectively called __________. A) integral proteins B) transport proteins C) transmembrane proteins D) glycoproteins
Cells transporting substances across their membranes is essential. Choose TWO of the following types of cellular transport. ๏osmosis ๏active transport (b)Using the same transport types, identify a specific cell that utilizes that type of transit (i.e. one cell for each transport type, or two different cell examples), and detail a substance that is transferred. (c)A typical human lymphocyte has a radius of about 10 μm, while a typical bacterium (e.g., S. pneumoniae) has a radius of about 1 μm. Assuming that both cell types are perfectly spherical, compare and contrastthe transport mechanisms for each of these cells.
Explain in 2-3 sentencesDescription:Examples in our body: 1. Active Transport (AT)
Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement? A. Exact concentration of solution is not given B. Character of semi permeable membrane is not given C. The flow of solution is not possible through semi permeable membrane D. All are incorrect