The chromosome composition of 1 in 1,000 females is
a. XO.
b. XX.
c. XXX.
d. XXY.
e. XYY.
C
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Chemoheterotrophs
A. use sunlight as an energy source. B. use preformed organic molecules as a carbon source. C. use preformed organic molecules as an energy source. D. use inorganic chemicals as an energy source. E. use preformed organic molecules as a carbon source AND as an energy source.
Consider the following two chemical equations:A
glucose + fructose ? sucrose + H2O, ?G = +27kJ/mole (or +6.5 kcal/mole) B. glucose + fructose + ATP ? sucrose + ADP + Pi, ?G = ?5kJ/mole (or ?1.2 kcal/mole) What is the overall ?G? a. 22 kJ/mole b. 32 kJ/mole c. -32 kJ/mole
d. -135 kJ/mole e. 135 kJ/mole
Spawning depends on
A) the synchronized release of eggs and sperm into the water. B) copulation. C) the release of a spermatophore into the water. D) internal fertilization. E) asexual reproduction.
Ribosomal subunits ____________.
A. come together in threes to form functional units B. are composed of mRNA and structural proteins C. are synthesized in the cytoplasm D. converge with tRNA when mRNA is to be translated E. are transcribed from the complementary strand of DNA that is used for tRNA transcription