QUESTION7 Question Completion Status: Match the following prokaryotic cell struc
ID: 272632 • Letter: Q
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QUESTION7 Question Completion Status: Match the following prokaryotic cell structures with their functions. glycocalyx/capsule prevents phagocytosis (contributes to virulence) -fimbriae attachment to cell surface - # nucleoid contains the genetic material protein synthesis ribosomes E. sulfur granules cell wall plasma membrane endospore energy reserves prevent osmotic lysis and protect cell membrane selectively permeable barrier survival structure during harsh conditions QUESTION 8 Prokaryotic cell walls are primarily made of pseudomurein chitin peptidoglycan celluloseExplanation / Answer
7) Capsule/ glycocalyx - Prevents phagocytosis(contributes to virulence).
The capsule acts a virulence factor and prevents phagocytosis. It protects cells from engulfment by eukaryotic cells, such as macrophages.
Fimbriae - Attachment to cell surface.
Fimbriae helps in attachment of cell surface to substratum.
Nucleoid - Contains the genetic material.
The nucleoid is the irregularly-shaped region of a prokaryotic cell where DNA as genetic material is present.
Ribosomes - Protein synthesis.
The ribosome serves as the site of protein synthesis.
Sulfur granules - Energy reserves.
Sulfur granules serve as an energy reserve in the cell.
Cell wall - Prevent osmotic lysis and protect cell membrane.
The presence of a cell wall prevents the membrane from bursting and protect the membrane.
Plasma membrane - Selectively permeable barrier.
The plasma membrane is selectively permeable, hydrophobic molecules and small polar molecules can diffuse through the lipid layer but ions and large polar molecules cannot.
Endospore - Survival structure during harsh condition.
Endospores are very resistant to harsh conditions. They can survive high heat, drying, radiation and many damaging chemicals.
8) The correct option is peptidoglycan.
Prokaryotic cell walls are composed of peptidoglycan. Peptidoglycan protects the cell and maintain cell shape.
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