Which of the following statements about the S-layer is correct?   Group of answer choicesS-layers are found in the archaea but not in bacteriaThe S-layer is composed of proteins which self-assemble to create a porous lattice coating the entire cellThe S-layer is covalently linked to peptidoglycan in both Gram positive and Gram negative bacteriaS-layer proteins form pores in the outer membrane to allow nutrient uptake by the cell

The outermost layer of a Gram-positive bacterium is made of:Question 10Answera.peptidoglycan.b.proteins.c.lipids.d.carbohydrates.e.chromosomes.

Which of the following statements about the Gram positive cell envelope is correct? Choose all the correct statements.Group of answer choicesSome Gram positive bacteria have peptide interbridges crosslinking adjacent peptidoglycan chains.The Gram positive cell envelope includes a thick layer of peptidoglycanLipopolysaccharide is found in the outer layer of the Gram positive cell envelopeTeichoic acids and mycolic acids are found in the cell envelope of most Gram positive bacteria

Which of the following is not a chemical component of a bacterial cell wall?Group of answer choicesN-acetylmuramic acidPeptide chainsPeptidoglycanTeichoic acidsCellulose

Gram PositiveGram-positive bacteria have a thick outer layer composed primarily of peptidoglycan, constituting about 90% of their cell wall. On the other hand, Gram-negative bacteria possess a chemically complex, thinner, and less compact cell wall, with peptidoglycan accounting for only 5-20% of the structure. Importantly, in Gram-negative bacteria, peptidoglycan is situated between the plasma membrane and the outer membrane, making it less accessible to antibiotics.

Which is the innermost germ layer?Multiple choice question.EndodermMesodermEpitheliumEctoderm