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
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During which of the following time periods does a CAM plant use rubisco?
a. daylight only b. in darkness only c. noon to midnight d. midnight to noon e. all 24 hours of a standard calendar day
Centrosome ring-shaped complexes contain ________ and ________
A) ?-tubulin; ?-tubulin B) ?-tubulin; MCAK C) ? -tubulin; MAP2 D) ?-tubulin; GRiPs E) ?-tubulin; crescentin
In the first half of the menstrual cycle, estrogen primarily is secreted by the ______.
A. oocyte B. corpus luteum C. follicular cells D. uterus
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