18 Questions
What is the main function of teichoic acids in relation to ions?
To bind and regulate the movement of cations into and out of the cell
What is the role of teichoic acids in cell growth?
To assume a role in cell growth
What is the main component of the Gram-negative cell wall?
Peptidoglycan
Where is the peptidoglycan located in Gram-negative cell walls?
In the periplasm
What is the function of teichoic acids in relation to the cell wall?
To provide antigenic specificity
What is the main function of the periplasm in Gram-negative cell walls?
To house degradative enzymes and transport proteins
What is the primary function of the cell wall in bacterial cells?
To prevent bacterial cells from rupturing due to osmotic pressure
What is the chemical composition of the bacterial cell wall?
A macromolecular network called peptidoglycan
What is the disaccharide portion of peptidoglycan composed of?
N-acetylglucosamine and N-acetylmuramic acid
What is the function of peptidoglycan in the Gram-positive cell wall?
To create a thick and rigid structure
What is attached to the disaccharide portion of peptidoglycan?
Polypeptides
What is the primary function of the capsule in pathogenic bacteria?
To protect from phagocytosis
What is the role of peptidoglycan in the cell wall?
To maintain cell shape and structure
What is the composition of the glycocalyx?
Polysaccharide, polypeptide, or both
What is the term used to describe a glycocalyx that is firmly attached to the cell wall?
Capsule
What is the purpose of the hook and basal body in flagella?
To anchor the flagellum to the cell wall and plasma membrane
What is the term used to describe a glycocalyx that is unorganized and loosely attached to the cell wall?
Slime layer
How can the presence of a capsule be determined?
Using staining
This quiz covers the composition and functions of teichoic acids in Gram-positive cell walls. Learn about the two classes of teichoic acids, their negative charge, and their role in regulating cation movement and cell growth. Test your knowledge of the structure and function of teichoic acids in Gram-positive bacteria.
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