Why do Mycobacteria need to be stained with an Acid Fast Tec

Why do Mycobacteria need to be stained with an \"Acid Fast Technique?\" A. they have a thick cell wall they have a waxy cell wall they do not have nuclei they have positively charged DNA none of the above The fluid mosaic model applies to ______. how endospores are formed how the cytoskeleton forms in bacteria. how active transport is performed in some species of bacteria how the nucleus of prokaryotes is kept in the center of the cell how molecules move freely within the cytoplasmic membrane Active transport of essential elements from outside of the bacterial cell to the inside requires energy expenditure. This energy is provided by either ________. NADH or NADH_2 glucose or FAD^+ ATP or the proton motive force sugar or FADH DNA or ATP What produces RNA? translation ribosomes DNA polymerase RNA polymerase none of the above Which of the following statements a true about biofilms? The ability to produce a biofilm contributes to the mechanism of disease. Biofilms can form on urinary catheters and pose a risk to the patient\'s health. Dental plaque is a good example of a biofilm. Some cannot penetrate a biofilm at therapeutic concentrations, and show limited effectiveness against it. all the above

Solution

7. Option B is correct. Mycobacterium cell wall is largely composed of fatty acids which resist gram staining; therefore, their cell wall looks like waxy and they stain through acid-fast technique.

8. Option E is correct. Cytoplasmic membranes have phospholipids which are motile for the flexibility with rigidity of membrane.

9. Option C is correct. Proton motive force or other chemiosmotic potential requires in Ion driven transport systems while ATP requires in Binding-protein dependent transport systems.

10. Option D is correct. In given options, RNA polymerase enzyme produces RNA from DNA through transcription process.

11. Option E is correct. Such bacteria form biofilms with help of exopolysaccharides.