Ventilation by an individual exercising strenuously is
indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Answer: c
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A classification system based on evolutionary relationships is called a ________ system.
A. determinative B. phylogenetic C. systematic D. phenetic
Which of the following is required for formation of the open complex of replication initiation?
A. binding of DnaB helicase to single strands of the replication bubble B. binding of DnaC to the four 9-mer consensus sequences, which destabilizes the AT-rich repeat sequences C. binding of DnaA to the four 9-mer consensus sequences, which destabilizes the AT-rich repeat sequences D. DnaA/DnaC/ATP complex loads DnaA onto the origin and ATP hydrolysis allows release of the DnaC protein E. oligomerization of the HU protein upon binding the origin, and wraping of the DNA around the oligomer
Spirilli are Gram-negative bacteria that possess internal flagella, which cause the entire cell to twist in a corkscrew
pattern.
Indicate whether the statement is true or false.The process of adding hydrogen to N2, creating NH3 and eventually NH4
+, and which requires a substantial input of ATP, is called
a. nitrification. b. ammonification. c. nitrogen cycling. d. nitrogen fixation. e. nitrogen assimilation.