18 Questions
What is the function of the bacterial capsule?
Determining virulence and protecting against phagocytosis
Which component of the bacterial cell wall consists of lipoproteins?
Outer membrane
What is the main function of the flagella in bacteria?
Providing motility
Which bacterial structure secretes hydrolytic enzymes to degrade large organic polymers?
Cytoplasmic membrane
What is the composition of ribosomes involved in protein synthesis in bacteria?
50 S and 30 S subunits
What is the role of permeases on the cytoplasmic membrane in bacteria?
Active transport of nutrients
What is responsible for the toxicity of Gram-negative bacteria, also known as endotoxin?
Lipid A
Which component of the outer leaflet forms pores in the outer membrane allowing diffusion of lower molecular weight compounds?
Porins
What is the major surface antigen of Gram-negative bacteria which determines its antigenic specificity?
O-antigen
What is a major surface antigen in Gram-positive bacteria that is not found in Gram-negative bacteria?
Teichoic acid
Which component of the cell wall accounts for high antibiotic resistance in Gram-negative bacteria?
Porins
Which part of the cell membrane is responsible for controlling the passage of nutrients into the cytoplasm?
Cytoplasmic membrane
What is the major constituent of the cell wall of Gram-positive bacteria?
Peptidoglycan layer
Which component is a major surface antigen of Gram-positive bacteria?
Teichoic acids
What stabilizes the outer membrane and fixes it to the peptidoglycan in Gram-negative bacteria?
Lipoprotein
Which type of bacteria has a thinner peptidoglycan layer in its cell wall?
Gram-negative bacteria
What is the composition of the outer membrane in Gram-negative bacteria?
Bilayer structure
Which organelle in bacterial cells is responsible for protein synthesis?
Ribosomes
Explore the functions of the bacterial cytoplasm and its components, including ribosomes and permeases. Learn about protein synthesis, active transport of nutrients, and secretion of hydrolytic enzymes in bacterial cells.
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