The anther represents the _____ portion of the plant, while the ovules represent the ____ portion of the plant
A. Female ; male
B. Male ; female
C. Female ; female
D. Male ; male
B
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A green colony with a black center was isolated and presumptively identified as a Salmonella spp. The organism was serotyped with polyvalent antisera; however, the antisera tested negative for all antigens. What is the next course of action?
a. Regrow the organism on sheep blood agar, and serotype again the next day. b. Make a suspension, and heat to 100°C for 10 minutes. c. Make a suspension, and place on ice for 30 minutes. d. Report the organism out as a nontypable Salmonella spp.
What is the basis of the typical -70mV resting potential in neurons? Rank the factors in order from most important to least important.
__ Ca+2 equilibrium potential __ K+ equilibrium potential __ Na+ equilibrium potential
Down syndrome involves trisomy ____.
A. 3 B. 5 C. 15 D. 19 E. 21
What is one difference between ubiquinones and cytochromes?
a. Ubiquinones can only be reduced; cytochromes can only be oxidized. b. Ubiquinones are not made of protein; cytochromes are. c. Ubiquinones cannot carry electrons; cytochromes can. d. Ubiquinones can only be oxidized; cytochromes can only be reduced.