The invertebrate group most closely related to the vertebrates is:
A. Echinodermata
B. Urochordata
C. Cephalochordata
D. Ophiouroidea
E. Notochordata
C. Cephalochordata
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Which of the following is not true of the stringent response?
A. Uncharged tRNA binds to the A site of the ribosome. B. Stringent factor binds to the ribosome. C. ppGpp nucleotide is synthesized in two steps. D. ppGpp binding to the ribosome increases rRNA gene expression.
The phenomenon of "glucose sparing" depends most critically on
A. glycogenolysis. B. protein synthesis. C. lipolysis. D. lipogenesis. E. glucose polymer formation.
Knockout experiments involving __________ genes in fruit flies (Drosophila melanogaster) revealed
local controls over gene expression. Fill in the blank(s) with the appropriate word(s).
The base sequences that are left behind after the introns have been spliced out by enzymes are the ________
A) genes B) anticodons C) exons D) phosphates