Question

Utganic acid food preser the PL preservatives (such as benzoic acid) inhibit bacterial growth because ih pH is restored to neutral 6. the hypertonie en c. The enzyme d. benzoic acid ettonie environment causes cells to dehydrate and stop replicating cytes involved in fenentation are inhibited 1c acid cannot be used as a carbon source 18 an accumulation of superoxide radicals that damage the cells c. there is an accum 35. All of the follow most difficult to destroy? the following have to be killed in order to achieve sterilization. In general, which is considered the a. Bacterial endospores b. Gram negative vegetative bacteria cells C. Enveloped viruses d. Gram positive vegetative bacteria cells or Vegetative fungi 36. The exotoxin produced by Clostridium botulintim causes? 4. Flaccid paralysis B. Spastic paralysis Dysentery Gastroenteritis Septic Shock 37. Which of the following is a broadly effective antimicrobial agent found in mouthwashes and hand soaps? iodine b. quaternary ammonium compounds (quats) C. chlorine liquid CO2 e. formaldehyde 38. Which of the following food-bome illnesses readily grows in deli meals and dairy-based products such as soft cheeses? Clostridium b. Listeria . Norovirus . Streptococcus e. Mycobacterium 19. A german scientist who isolated and identified the bacterial cause of several diseases including anthrax uberculosis, and cholera was? a. Louis Pasteur b. Joseph Lister : Alexander Fleming George Mason C. Robert Koch Which statement about Mycobacterium tuberculosis is/are TRUE? a. It is the causative agent of tuberculosis . Although a major public health concern in the late 1800s, successful vaccination campaigns have reduced it to minimal importance c. It grows very slowly and exhibits very little resistance to antimicrobial drugs d. Answers A and B are true c. All of the above are true

Answer 1

C

SBI Life INSUR m on. Your sur JARY FEBRUARY bupt functic the normal 26 Monday 34. Hypertonic environment caurs cela to leny drale and stop deeplicating 2 organic acid work as nondissociated Organc acid can penetrate the bactence wall and disfubt the norma of bacteria - 35. 10 Enveloped rimees 36 Flaccid paralysis ( Neurotoxing 37 quaternary ammonium compound- / / 38 Listeria (found refrigerated, ready to eat a dairy product) 39. Robert Koch 80 A and B1 que (J.B are highly antibiotic ve Bacteria or March 12 4 5 6 7 8 9 11 12 13 14 15 16 18 19 20 21 22 23 25 26 27 28 29 3