What characteristic is unlikely to be associated with arctic tundra?

a. a perpetually waterlogged soil
b. rapid nutrient recycling
c. one of the world's greatest store of carbon
d. permafrost
e. cool, anaerobic conditions


ANSWER: b

Biology & Microbiology

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a. daylight only b. in darkness only c. noon to midnight d. midnight to noon e. all 24 hours of a standard calendar day

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Centrosome ring-shaped complexes contain ________ and ________

A) ?-tubulin; ?-tubulin B) ?-tubulin; MCAK C) ? -tubulin; MAP2 D) ?-tubulin; GRiPs E) ?-tubulin; crescentin

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In the first half of the menstrual cycle, estrogen primarily is secreted by the ______.

A. oocyte B. corpus luteum C. follicular cells D. uterus

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A 5'-cap describes the addition of a base, usually thymine, to the 5' end of a completed peptide

Indicate whether the statement is true or false

Biology & Microbiology