In SDS-PAGE, protein sample is first treated with detergent sodium dodecyl sulfate (SDS), in order to

#Question id: 40182

#Environmental Science

#Question id: 40183

#Applied Microbiology

Which of the following components is unique to the cell wall of Gram-positive bacteria and is responsible for its negative charge?

#Question id: 40184

#Applied Microbiology

Choose the correct option regarding the bacterial cell wall.

Assertion (A): N-acetylmuramic acid (NAM) is a crucial component of the bacterial cell wall found in both Gram-positive and Gram-negative bacteria.

Reason (R): NAM residues serve as the attachment point for the peptide chains that cross-link the peptidoglycan layers. 

#Question id: 40185

#Applied Microbiology

Read the following statements regarding the bacterial cell envelope:

Statement I: The outer membrane of Gram-negative bacteria contains Lipopolysaccharides (LPS), which consists of Lipid A, Core polysaccharide, and O-antigen.

Statement II: Lysozyme breaks down the bacterial cell wall by cleaving the glycosidic bond between Lipid A and the Core polysaccharide. 

#Question id: 40186

#Applied Microbiology

Which of the following are TRUE regarding the difference between Gram-positive and Gram-negative cell walls?

(A) Gram-positive walls have a thick peptidoglycan layer.

(B) Gram-negative walls contain Porin proteins.

(C) Gram-positive walls contain a Periplasmic space.

(D) Gram-negative walls lack Teichoic acids. 

Choose the correct combination:

#Question id: 40187

#Applied Microbiology

During which phase of the microbial growth cycle are cells most metabolically active and dividing at a constant maximum rate?