What name is given to the region where sea meets land?
A) pelagic realm
B) intertidal zone
C) benthic realm
D) aphotic zone
B
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If a double stranded piece of DNA is amplified by PCR then after 4 cycles there would be _____ copies of this DNA
1.2 2.4 3.8 4.16 5.32
The same molecule may be both __________ and
__________. a. enzyme; neurotransmitter b. neurotransmitter; hormone c. enzyme; pheromone d. hormone; second messenger e. hormone; local signaling molecule
In the PCR technique, what bonds are broken when DNA is heated?
A. Hydrogen D. Hydrogen and covalent B. Covalent E. Hydrogen, covalent, and ionic C. Ionic
Torsion may be an adaptation in __________ that allows the __________ to be withdrawn first into
the shell. A. bivalves; foot B. bivalves; head C. gastropods; foot D. gastropods; head E. cephalopods; head