Gram Positive Cell Wall Structure and Function
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Questions and Answers

What is the primary function of the cell wall in microbes?

  • To facilitate movement
  • To provide structure and protection (correct)
  • To synthesize proteins
  • To regulate gene expression

What is the term for the ability of microbes to move towards or away from a stimulus?

  • Taxis (correct)
  • Motility
  • Chemotaxis
  • Osmosis

What is the purpose of endospores in microbes?

  • To facilitate DNA replication
  • To ensure survival in harsh environments (correct)
  • To enhance protein synthesis
  • To increase biofilm formation

What is the term for the complex community of microbes adhering to a surface?

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

What is the term for the carbohydrate-rich outer layer of microbes?

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

What is the term for the outer layer of polysaccharides that provides protection and facilitates adhesion to surfaces?

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

What is the primary function of teichoic acids in the gram positive cell wall?

<p>Facilitating cell adhesion and maintaining a negative charge (A)</p> Signup and view all the answers

What is the purpose of the glycocalyx in gram positive bacteria?

<p>To protect the bacteria from host defenses (B)</p> Signup and view all the answers

What is the primary function of the capsule in gram positive bacteria?

<p>Inhibiting recognition and engulfment by immune cells (D)</p> Signup and view all the answers

What is the purpose of the slime layer in gram positive bacteria?

<p>To retain moisture around the cell and facilitate attachment to surfaces (B)</p> Signup and view all the answers

What is the primary function of biofilms in gram positive bacteria?

<p>To protect the bacteria from host defenses and environmental stressors (C)</p> Signup and view all the answers

What type of bacteria are endoflagella typically found in?

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

What is the function of the tail attached to the amino terminus of a protein?

<p>To allow the protein to be embedded in the lipid bilayer (D)</p> Signup and view all the answers

What happens to a cell when it is placed in a hypotonic solution?

<p>Water flows into the cell, causing it to swell (C)</p> Signup and view all the answers

What is the characteristic feature of a Gram-negative cell wall?

<p>Two membranes separated by a periplasmic space (A)</p> Signup and view all the answers

What is the function of lysosomes in a cell?

<p>To break down molecules (D)</p> Signup and view all the answers

What is the characteristic feature of Mycoplasma?

<p>The presence of a cytoplasmic membrane (B)</p> Signup and view all the answers

What is the function of porin proteins in the outer membrane of a Gram-negative cell wall?

<p>To facilitate the transport of molecules across the membrane (A)</p> Signup and view all the answers

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