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

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology

Down syndrome involves trisomy ____.

A. 3 B. 5 C. 15 D. 19 E. 21

Biology & Microbiology