In some circumstances, when two different carbon sources are available, growth will occur first using one carbon source, then after a short lag period, growth will resume using the second carbon source. This process is called ________ growth.
A. alternating
B. dimorphic
C. bimorphic
D. diauxic
Answer: D
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Vertebrate bone consists primarily of a crystalline mixture of
A. Ca2+, PO4-2. B. Ca2+, SO4-2. C. Ca2+, Cl2. D. Na+, Cl-. E. Adenosine, PO4-2.
Animals establish and defend territories only when ____
a. the effort does not endanger the life of the individual b. males compete for females by fighting c. some critical resource is in short supply d. females choose among displaying males e. territorial defense is not energetically costly
Biramous appendages in arthropods are only present in which organism?
a. insects b. arachnids c. centipedes d. crustaceans e. horseshoe crabs
Which of the following does not occur in prokaryotic gene expression, but does occur in eukaryotic gene expression?
A) mRNA, tRNA, and rRNA are transcribed. B) RNA polymerase binds to the promoter. C) A cap is added to the end of the mRNA. D) RNA polymerase requires a primer to elongate the molecule.