16 Questions
What are the essential components of bacterial cells?
Cytoplasm, cell membrane, and cell wall
Bacterial cell walls are made from what macromolecule?
Peptidoglycan
What is the major function of the cell wall in bacterial cells?
To provide structural support and shape to the cell
What bacteria lack a cell wall?
Mycoplasma
What is the structure of Gram-positive cell walls primarily composed of?
Peptidoglycan
Which macromolecule forms the primary component of Gram-negative cell walls?
Lipopolysaccharides
What are the components of the lipopolysaccharide (LPS)?
Lipid A, core polysaccharide, O-specific polysaccharide
What are the two types of pili and what are their functions?
Fimbriae for attachment and sexual pili for motility
What important enzyme is found in the periplasmic space of gram-negative bacteria?
Penicillin-binding protein (PBP)
What metabolically inactive structure formed by certain bacteria is resistant to environmental stresses?
Spore
Bacterial capsules are typically made from what macromolecule?
Polysaccharide
What are the two functions of a bacterial capsule?
Protection and biofilm formation
What type of bacteria has teichoic and lipoteichoic acid?
Gram-positive bacteria
What are the three basic groups into which bacteria are classified based on shape?
Cocci, bacilli, spirilla
Which enzyme is used by some bacteria to resist environmental stresses?
Superoxide dismutase
What structure do some bacteria form to resist environmental stress?
Spore
Test your knowledge on the structure of bacterial cells and related concepts in microbiology. This quiz covers topics such as prokaryotic and eukaryotic cells, bacterial cell anatomy, and cell appendages.
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