Biological Membranes & Receptors Module Quiz

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Questions and Answers

What is the main function of membrane proteins?

  • Acting as a barrier for the cell
  • Regulation of cell movement
  • Facilitation of nutrient transport into the cell (correct)
  • Energy production for the cell

Which of the following is a function of the plasma membrane?

  • Facilitates protein synthesis
  • Produces energy for the cell
  • Stores genetic material
  • Regulates cell movement (correct)

Which statement best describes the influence of unsaturated fatty acids on membrane fluidity?

  • Unsaturated fatty acids increase membrane fluidity (correct)
  • Unsaturated fatty acids decrease membrane fluidity
  • Unsaturated fatty acids only affect organelle membranes
  • Unsaturated fatty acids have no effect on membrane fluidity

Which type of membrane restricts protein movement?

<p>Plasma membrane in plant cells (B)</p> Signup and view all the answers

What is the general process of membrane formation called?

<p>Biogenesis (B)</p> Signup and view all the answers

What is the primary function of the erythrocyte membrane and cytoskeleton, as a model, according to the intended learning outcomes?

<p>Model for protein movement restrictions (D)</p> Signup and view all the answers

Which of the following is NOT a main kind of membrane lipid as listed in the intended learning outcomes?

<p>Cholesterol (C)</p> Signup and view all the answers

What kind of cell membrane surrounds the entire cell?

<p>Plasma membrane (A)</p> Signup and view all the answers

Which statement accurately describes the influence of unsaturated fatty acids on membrane fluidity?

<p>Unsaturated fatty acids increase membrane fluidity (B)</p> Signup and view all the answers

Which class of membrane proteins is involved in transport and channel formation across the membrane?

<p>Integral proteins (B)</p> Signup and view all the answers

Which of the following statements accurately describes the structure of membrane lipids?

<p>Membrane lipids consist of unsaturated fatty acids, cholesterol, and phospholipids. (B)</p> Signup and view all the answers

What role do unsaturated fatty acids play in the fluidity of biological membranes?

<p>Unsaturated fatty acids increase membrane fluidity. (B)</p> Signup and view all the answers

Which of the following is a characteristic of cholesterol in biological membranes?

<p>Cholesterol decreases membrane permeability to small, nonpolar molecules. (A)</p> Signup and view all the answers

Which statement best describes the functions of membrane proteins?

<p>Membrane proteins have a wide range of functions, including transport, signal transduction, and cell recognition. (C)</p> Signup and view all the answers

What is the primary function of the erythrocyte membrane and cytoskeleton as a model for understanding specificity?

<p>The erythrocyte membrane and cytoskeleton aid in understanding the selective permeability of biological membranes. (A)</p> Signup and view all the answers

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