Reef systems
a. are seriously threatened ecosystems.
b. are formed from calcium carbonate secreted
by coral polyps.
c. have symbiotic dinoflagellates in the living
coral.
d. have shown widespread bleaching; death of
corals is being reported worldwide.
e. include all of these
E
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In the light-independent reactions, when CO2 is added to a molecule of Ribulose 1,5-bisphosphate (RuBP) the product is
A. citric acid. B. glucose. C. glyceraldehyde-3-phosphate. D. 3-phosphoglycerate. E. pyruvate.
Messenger RNAs that contain no stop codons due to a frameshift mutation are eliminated by
A) nonstop decay. B) directed RNase activity. C) nonsense-mediated decay. D) error-mediated repair. E) none of the above
What is gestation?
A) conception B) fertilization C) development D) pregnancy
The surface of each B lymphocyte is covered with about 250,000 to 500,000 identical copies of (BCR/MHC/TCR).
Fill in the blank(s) with the appropriate word(s).