Many marine organisms incorporate carbon into their shells. After they die, these shells become part of the ____
a. atmosphere
b. sediment
c. ocean
d. ocean food web
e. land food web
b
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The epsilon (?) subunit of DNA polymerase III of E. coli has exonuclease activity. How does it function in the proofreading process? The epsilon subunit _____
A) removes a mismatched nucleotide B) excises a segment of DNA around the mismatched base C) can recognize which strand is the template or parent strand and which is the new strand of DNA. D) adds nucleotide triphosphates to the end of the growing DNA strand
The SOS regulatory system is activated by
A) the activity of DNA polymerase IV. B) DNA damage. C) transcription of LexA. D) repression of RecA.
When neurons are not producing electrical signals, there is still a voltage difference across their membranes. What is this voltage called?
A. channel-gate bias B. electrolyte voltage C. equilibrium potential D. resting potential E. ion current
The amount of air that remains in the lungs after a forced exhalation is called _________________
Fill in the blank(s) with the appropriate word(s).