Cell Membrane Structure and Drug Targets Quiz
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Questions and Answers

Which of the following is NOT a common drug target according to the text?

  • Receptors
  • Structural proteins (tubulin)
  • Enzymes
  • Nucleic acids (correct)

In the context of drug targeting, which type of bonds are mentioned as different from covalent bonds?

  • Disulfide bonds (correct)
  • Van der Waals forces
  • Ionic bonds
  • Hydrogen bonds

Where are proteins, the most common drug targets, mainly located according to the text?

  • Mitochondria
  • Cell membrane or cytoplasm (correct)
  • Endoplasmic reticulum
  • Cell nucleus

What does a drug target do when a drug binds to it according to the text?

<p>Undergoes change in function (D)</p> Signup and view all the answers

What type of bonds are the strongest intermolecular bonding forces mentioned in the text?

<p>Electrostatic or ionic bonds (C)</p> Signup and view all the answers

Which type of bond involves directional orbitals and has an optimum direction where the X-H bond points directly to the lone pair on Y?

<p>Hydrogen bonds (D)</p> Signup and view all the answers

Which is an example of a good hydrogen bond donor according to the text?

<p>Quaternary ammonium ion (D)</p> Signup and view all the answers

What type of drug-target interaction involves transient areas of high and low electron densities causing temporary dipoles?

<p>Van der Waals interactions (B)</p> Signup and view all the answers

In what type of environment are ionic interactions stronger, according to the text?

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

Which of the following is NOT an example of a good hydrogen bond acceptor based on the text?

<p>Aromatic ring (A)</p> Signup and view all the answers

What happens to the strength of dipole-dipole interactions as the distance between molecules increases?

<p>Decreases less rapidly than electrostatic interactions (B)</p> Signup and view all the answers

How do ion-dipole interactions compare to dipole-dipole interactions in terms of strength?

<p>Ion-dipole interactions are stronger (B)</p> Signup and view all the answers

What is the primary characteristic of induced dipole interactions?

<p>They involve one molecule inducing a dipole on another (B)</p> Signup and view all the answers

Which intermolecular force involves the interaction between aromatic rings?

<p>Pi-stacking (π-π stacking) (A)</p> Signup and view all the answers

In what scenario would dipole-dipole interactions be detrimental to molecular orientation in a binding site?

<p>When the drug's orientation is not beneficial due to incorrect binding group positions (B)</p> Signup and view all the answers

What is a distinguishing feature of Pi-stacking (π-π stacking) compared to other types of intermolecular forces?

<p>It involves attractive interactions between aromatic rings (D)</p> Signup and view all the answers

What type of interactions are involved in Pi-stacking (π-π stacking)?

<p>Quadrupole-quadrupole interactions and London dispersion forces (D)</p> Signup and view all the answers

What is necessary for desolvation to occur during drug-target interactions?

<p>Energy penalty due to breaking bonds (A)</p> Signup and view all the answers

What contributes to the increase in entropy during drug-target interactions involving hydrophobic regions?

<p>Formation of more structured water layers (D)</p> Signup and view all the answers

What type of bonds are most commonly formed between a drug and its target according to the text?

<p>Electrostatic/ionic bonds (D)</p> Signup and view all the answers

Which type of bond involves an optimum direction where one bond points directly to the lone pair on another?

<p>Hydrogen bond (A)</p> Signup and view all the answers

What do hydrophobic interactions in drug targeting specifically 'free up', leading to higher entropy?

<p>Structured water molecules (D)</p> Signup and view all the answers

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