How is Puccinia graminis primarily transported to new regions of the world?
a. infected livestock
b. humanitarian aid distribution
c. wind
d. flooding
e. infected seed stock
ANSWER: c
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What characteristic separates the two kinds of land plants?
a. The thickness and composition of their cell walls b. The form and shape of their leaves c. Their root structures d. The presence of vascular tissue
According to the ________ principle, a muscle cell contracts completely when adequately stimulated by a motor neuron
Fill in the blank(s) with correct word
The phenomenon in which RNA molecules in a cell are destroyed if they have a sequence complementary to an introduced double-stranded RNA is called _____
A) RNA interference B) RNA obstruction C) RNA blocking D) RNA disposal
A urine specimen from a maternity patient with the complaint of cystisis was recieved in the lab. The culture of tis sample grew a lactose- positive. Gram negative bacillys that was presumtively identified as E. Coli. On differential and selective media this organism would demonstrate which reaction?
A. Hektoen Enteric Agar= green/colorless colonies with black centers B. MacConkey Agar= Colorless colonies C. xylose-lysine-Desoxycholate Agar= yellow colonies D. Xylose-Lysine Desoxychocolate Agar= colorless colonies