When a cell uses chemical energy to perform work, it uses the energy released from a(n) ________ reaction to drive a(n) ________ reaction
A) exergonic; endergonic
B) endergonic; exergonic
C) exergonic; spontaneous
D) spontaneous; exergonic
Answer: A
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Arrange the steps in RNA splicing in order from earliest to latest
A) exon ends are covalently joined together B) components of the spliceosome bind conserved regions in the intron and bring them together in close proximity C) acceptor splice site is cut. D) donor splice site is cut and the end of the intron is joined covalently to the branch site
Spirochetes are able to move due to ________.
A. a periplasmic flagellum B. pseudopods C. glycocalyx for gliding motility D. a membrane-bound flagellum E. cilia serving as walking feet
On Earth, solar energy is most intense at
A. the South Pole. B. the North Pole. C. 60° North latitude. D. the equator. E. 60° South latitude.
Newborns exposed to Neisseria gonorrhoeae may develop
A. a bubo. B. meningitis. C. an eschar. D. ophthalmia neonatorum. E. petechiae.