Which of these cannot rapidly pass directly through the phospholipids of the plasma membrane?

Which of these cannot rapidly pass directly through the phospholipids of the plasma membrane? The Correct Answer is B, C, and D- (Water, Glucose, and Hydrogen)- (Ions, such as hydrogen ions, and hydrophilic molecules, such as water and glucose, cannot rapidly pass directly through the phospholipids of a plasma membrane. To move rapidly through the … Read more

Which of the following factors does not affect membrane permeability?

Which of the following factors does not affect membrane permeability? The Correct Answer is The polarity of membrane phospholipids- (Phospholipids contain both a polar head and a nonpolar hydrocarbon tail, both of which are necessary for their ability to form membrane bilayers.) Reason Explained The polarity of membrane phospholipids- (Phospholipids contain both a polar head … Read more

If a red blood cell is placed in a salt solution and bursts, what is the tonicity of the solution relative to the interior of the cell?

If a red blood cell is placed in a salt solution and bursts, what is the tonicity of the solution relative to the interior of the cell? The Correct Answer is Hypotonic- (The salt concentration in the solution is lower than it is in the cell, so water enters the cell, causing it to burst.) … Read more

How can a lipid be distinguished from a sugar?

How can a lipid be distinguished from a sugar? The Correct Answer is Lipids are mostly nonpolar.- (Lipids are nonpolar molecules, whereas sugars are polar.) Reason Explained Lipids are mostly nonpolar.- (Lipids are nonpolar molecules, whereas sugars are polar.) is correct for How can a lipid be distinguished from a sugar?

Which of the following is a major cause of the size limits for certain types of cells?

Which of the following is a major cause of the size limits for certain types of cells? The Correct Answer is the need for a surface area of sufficient area to allow the cell’s function Reason Explained the need for a surface area of sufficient area to allow the cell’s function is correct for Which … Read more

What is the function of Structure E?

What is the function of Structure E? The Correct Answer is stabilization of the phospholipids – (Cholesterol helps to stabilize the structure of the plasma membrane.) Reason Explained stabilization of the phospholipids – (Cholesterol helps to stabilize the structure of the plasma membrane.) is correct for What is the function of Structure E?

Which of the following is true of the evolution of cell membranes?

Which of the following is true of the evolution of cell membranes? The Correct Answer is As populations of organisms evolve, different properties of their cell membranes are selected for or against. Reason Explained As populations of organisms evolve, different properties of their cell membranes are selected for or against. is correct for Which of … Read more