Despite ether-linked lipids being a hallmark of the Archaea, the thermophilic sulfate- reducing bacteria in ________ also contain ether-linked lipids, which suggests they may be more closely related to Archaea than many other groups in Bacteria
A) Aquifex
B) Thermodesulfobacterium
C) Thermus
D) Verrucomicrobium
Answer: B
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You run a PCR cycle for five cycles. Theoretically, how many copies of your sequence would you now have?
A. 8 B. 12 C. 16 D. 24 E. 32
________ produces short sequences of RNA, which allows polymerase to synthesize a new strand of DNA.
A. DNA primase. B. DNA helicase. C. DNA polymerase. D. DNA topoisomerase. E. DNA ligase.
While lying awake in bed, you stare at your ceiling, watching a faint sparkling, shimmering movement in the pitch darkness around you. What causes this phenomenon in the absence of visible light?
a. Myopia makes near infrared light perceivable. b. The cosmic microwave background is faintly visible. c. Tonic activity generates illusory visual activity. d. Degeneration of the optic nerve creates false images.
Which of the following factors should make females the "choosier" sex?
a. Eggs are expensive and rare compared to sperm. b. Females tend to invest more time and energy in gestation time and/or brood care. c. Female quality never plays a role in male mating decisions. d. Males and females show about the same variation in quality. e. A and B.