DNA is separated, and then duplicated, during cellular reproduction. Which process results in cells that contain slightly different combinations of genes compared to the parent cell?
A) meiosis
B) mitosis
C) fertilization
D) cytokinesis
Ans: A) meiosis
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A convenient and reliable identification scheme for P. aeruginosa involves which of the following conventional tests?
a. Oxidase, triple sugar iron (TSI) slant, growth at 42°C on Mueller-Hinton agar or trypticase soy agar b. Catalase, lysine iron agar (LIA) slant, growth at 42°C on Mueller-Hinton agar or trypticase soy agar c. Oxidase, TSI slant, growth at 24°C on Mueller-Hinton agar or trypticase soy agar d. Catalase, TSI slant, growth at 42°C on sheep blood agar or blood trypticase soy agar
Oxygen acts as a final electron acceptor in respiration and is ultimately converted into which
molecule?
a. water b. ATP c. CO2 d. glucose e. phosphate
Although several classes of antibacterial drugs act by inhibiting protein synthesis, only one acts by inhibiting the actual initiation of protein synthesis. What is this class of drugs?
A) Sulfonamides B) Chloramphenicol C) Vancomycin D) Fluoroquinolones E) Oxazolidinones
What is the temperature sensitive pigment of Serratia marcescens which cause it to be red at 25C and white at 37C
a. prodigiosin b. ligase c. casein d. ribozyme e. catalase