BIO 250 Questions With Correct Answers | Latest Update 2023/2024 Graded A+ | STRAIGHTERLINE

Which of the following is not true of chloramines? Select one: a. Contains chlorine b. Can sanitize and disinfect c. Form trihalomethanes with organic compounds d. Is safer than free chlorine e. Treats wounds and skin surfaces Feedback The correct answer is: Form trihalomethanes with organic compounds Question2 Correct Mark 5.00 out of 5.00 Flag question Question text Which white blood cells comprise 3-7% of circulating WBC's, are phagocytic and can migrate out into body tissues to differentiate into macrophages? Select one: a. Basophils b. Eosinophils c. Neutrophils d. Monocytes e. Lymphocytes Feedback The correct answer is: Monocytes Question3 Correct Mark 5.00 out of 5.00 Flag question Question text The time from when pathogen first enters the body and begins to multiply, until symptoms first appear is the Select one: a. Prodromal stage b. Convalescent stage c. Incubation period d. Period of invasion e. None of the choices are correct Feedback The correct answer is: Incubation period Question4 Correct Mark 5.00 out of 5.00 Flag question Question text Vaccinia virus is often used in the technique to make Select one: a. Adjuvant b. Booster c. Antibodies to toxin d. Gamma globulin e. "Trojan horse" recombinant vaccine Feedback The correct answer is: "Trojan horse" recombinant vaccine Question5 Correct Mark 5.00 out of 5.00 Flag question Question text Clavulanic acid Select one: a. Inhibits B-lactamase activity b. Inhibits peptidoglycan synthesis c. Inhibits formation of peptidoglycan cross linkages d. Inhibits cell membrane synthesis e. None of the choices are correct Feedback The correct answer is: Inhibits B-lactamase activity Question6 Correct Mark 5.00 out of 5.00 Flag question Question text Each of the following effect cell walls except Select one: a. Penicillin b. Cycloserine c. Vancomycin d. Erythromycin e. Cephalosporin Feedback The correct answer is: Erythromycin Question7 Correct Mark 5.00 out of 5.00 Flag question Question text Alcohols Select one: a. Denature proteins when in a 50-95% alcohol-water solution b. Disinfect items soaked in alcohol c. Are skin degerming agents d. At 50% or higher concentrations dissolve cell membrane lipids e. All of the choices are correct Feedback The correct answer is: All of the choices are correct Question8 Incorrect Mark 0.00 out of 5.00 Flag question Question text The reticuloendothelial system Select one: a. Is a support network of connective tissue fibers b. Originates in the cellular basal lamina c. Provides a passageway within and between tissues and organs d. Is heavily populated with macrophages e. All of the choices are correct Feedback The correct answer is: All of the choices are correct Question9 Correct Mark 5.00 out of 5.00 Flag question Question text The Quellung test involves Select one: a. A precipitation reaction