The ____ is the developing gut for most animal embryos
a. schizocoelom
b. mesoglea
c. archenteron
d. enterocoelom
e. blastopore
C
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One of the most important roles of proteoglycans is to trap ________.
Fill in the blank(s) with the appropriate word(s).
Forests are generally regarded as CO2 ________.
A. sources B. sinks C. both a source and a sink D. None of the choices are correct.
Salts and sugars work to preserve foods by creating a
A) depletion of nutrients. B) hypotonic environment. C) lower osmotic pressure. D) hypertonic environment. E) lower pH.
Which of the following is true regarding the tRNA structure?
A) The anticodon is found at the 3? end of the tRNA molecule. B) An amino acid binds to the 5? end of the tRNA molecule. C) A tRNA molecule that has an amino acid attached to it is called a charged tRNA. D) The tRNA binds to an mRNA's codon at the variable loop. E) The nucleotides found in a tRNA molecule can only be adenine, uracil, guanine, and cytosine.