Advancements in Genetic Engineering and Biochemistry
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Questions and Answers

What major breakthrough has contributed to the possibility of gene therapy for genetically determined diseases?

  • Invention of the microscope
  • Advances in genomics
  • Discovery of penicillin
  • Development of DNA recombinant technology (correct)

Which of the following is NOT mentioned as a potential application of gene therapy?

  • Producing human insulin (correct)
  • Silencing genes using RNA interference
  • Treating AIDS
  • Curing cancer

What approach is mentioned for creating transgenic animals in the text?

  • Cloning entire animals
  • Gene targeting of embryonic stem cells (correct)
  • Chemical synthesis of animals
  • Cross-breeding of different species

What is the likely role of 'designer medicine' as discussed in the text?

<p>Customizing treatments based on genetic information (D)</p> Signup and view all the answers

Which area of study has been crucial in opening up new possibilities for treating diseases like cancer and AIDS?

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

What is the major constituent of the bacterial cell wall that provides mechanical strength to the plasma membrane?

<p>N-acetyl muramic acid (NAM) (D)</p> Signup and view all the answers

What is the role of transmembrane proteins in the cell membrane?

<p>Serving as receptors, ion channels, and enzymes (A)</p> Signup and view all the answers

What structural feature distinguishes animal cells from bacterial cells?

<p>Presence of a cell wall (D)</p> Signup and view all the answers

Which specialized membrane structure is implicated in the loss of contact inhibition in cancer cells?

<p>Tight junction (D)</p> Signup and view all the answers

What are the three types of covalent lipid attachments found in lipoproteins associated with membranes?

<p>Isoprenoids, fatty acids, and glycosylphosphatidyl inositol (GPI) (D)</p> Signup and view all the answers

How are peripheral membrane proteins attached to the lipid bilayer?

<p>Ionic and polar bonds to polar heads of lipids (A)</p> Signup and view all the answers

Which type of linkage is involved in anchoring proteins to lipid bilayers via phosphatidyl inositol?

<p>Glycosyl phosphatidyl inositol (GPI) anchor (B)</p> Signup and view all the answers

What components make up the glycan chain linked to the C-terminus of a protein in the GPI anchor?

<p>Ethanolamine, phosphate, and carbohydrate residues (C)</p> Signup and view all the answers

How are peripheral membrane proteins firmly anchored to membranes?

<p>Through insertion of lipids into the hydrophobic core (D)</p> Signup and view all the answers

Which lipid type is involved in anchoring proteins through covalent linkage with membrane lipids?

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

What is the implication of abnormalities in specific fission and fusion proteins?

<p>Development of Charcot-Marie-Tooth disease (D)</p> Signup and view all the answers

In what condition would mitochondrial particles released from damaged tissue evoke an immune response?

<p>When the particles are antigenic (A)</p> Signup and view all the answers

How does the plasma membrane influence cellular metabolism according to the text?

<p>By regulating entry and exit of compounds (A)</p> Signup and view all the answers

What is the primary role of the plasma membrane in relation to the external environment?

<p>Regulating entry and exit of compounds (A)</p> Signup and view all the answers

How does the membrane contribute to cellular activities?

<p>By being metabolically very active (C)</p> Signup and view all the answers

What improvement was introduced in the Third edition of the textbook?

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

In which edition were the facts presented in small paragraphs to aid memory?

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

How many figures are approximately included in the Seventh edition of the textbook?

<p>1000 figures (A)</p> Signup and view all the answers

Which aspect of the textbook's content was improved in the Sixth edition?

<p>Number of figures (C)</p> Signup and view all the answers

What aspect of the textbook made it more student-friendly according to the text?

<p>Presentation of facts in small paragraphs (C)</p> Signup and view all the answers

What feature distinguishes the Seventh edition as an 'illustrated textbook' according to the text?

<p>Inclusion of 1100 figures, 230 tables, and 200 boxes (A)</p> Signup and view all the answers

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