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- What cell functions are associated with the following structures that can be felt in the body? Specify a situation.1. Cell wall and cell membrane2. Ribosomes3. NucleusFor the following questions, match the labeled component of the cell membrane (Figure 3) with its description. Write the letter that corresponds the concept being asked. E D- Figure 3. 1. Peripheral protein 2. Cholesterol 3. Fiber of the extracellular matrix 4. Microfilament of the cytoskeleton 5. GlycolipidTight juctions _________ Select one: a. prevent cytoplasm from moving b. prevent microtubules from moving c. prevent ubiquinine from moving d. prevent proteins from moving within their membrane domain e. prevent proteins from moving outside their membrane domain
- Statement 1: Peripheral Membrane Proteins are hydrophilic and are typically attached to the polar head groups of the phospholipid bilayer by ionic and hydrogen bonding. Statement 2: It is easier to remove peripheral membrane proteins in the plasma membrane than integral membrane proteins. A Statement 1 is true. Statement 2 is false. B Statement 1 is false. Statement 2 is true. (C) Both statements are true. Both statements are false.At this point, go over your answers to the activit ies given earlier in this lesson before you fill out the table below. Table 20: Interdependence of Function and Fom in the Cell Membrane Which components of the cell membrane enable it to perform this function? Function of the Cell Membrane How do these components help the cell membrane in performing this function? iully control the passage of substances through its membrane. However, all activit ort, involve energy. This leads us to another characte As stated in the first section of this lesson, maintaining homeostasis requires ise this in poweringWhich of the following types of proteins allow materials to move into, or out of, the cell?a. receptor proteins b. junction proteins c. enzymatic proteinsd. channel proteins
- Draw a lipid bilayer, and focus on three lipids that are on the same side of the membrane. Color in the areas where you expect the hydrophobic interactions, and in another color, shade in the areas that are hydrophilic. Draw another lipid bilayer, and for this one, include two membrane proteins. One of them should be an integral membrane protein and the other one a peripheral membrane protein. Label the lipid bilayer, the side the faces the cytoplasm and the side that faces outside the cell. Also label the two proteins, and shade in the areas where you predict that you would find hydrophobic amino acids and hydrophilic amino acids.What is the important role of cell membrane in keeping the normal function of the cell.You may cite situations where you could apply its mechanism in real life?For a protein to be an integral membrane protein, it would have to be amphipathic, which means that it ________. has only hydrophilic regions has only hydrophobic regions has both hydrophilic and hydrophobic regions exposed on only one surface of the membrane
- Compare and contrast the four basically different ways that a substance can move across the plasma membrane. Present it in a matrix.Which of the following is Not a function of the plasma membrane proteins? A. Acting as enzymes B. Acting as channels C. Acting as carriers D. Stabilizing temperatureChoose among the following the two properties of a particle influence whether it can permeate the plasma membrane? A. lipid solubility of the particle B. particle mass C. particle size D. water solubility of the particle E. particle color F. particle weight
