__________ fills spaces between cells. Fill in the blank(s) with the appropriate word(s)
Answer: Interstitial fluid
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Ribosomes consist of ________ separate subunits that come together as part of the initiation process and dissociate immediately after termination.
A. five B. two C. three D. four
The "one gene–one enzyme" hypothesis of George Beadle and Edward Tatum was an oversimplification because:
A. mutations may not completely inactivate an enzyme. B. some enzymes contain more than one polypeptide. C. some enzymes can be phosphorylated. D. auxotrophs can be corrected. E. some RNAs are independently catalytic.
In meiosis, sister chromatids ____
a. separate before DNA replication b. separate before crossing-over c. separate during anaphase I d. separate during anaphase II e. never separate; sister chromatids do not separate in meiosis.
A bacterial cell has a nonsense mutation that prevents it from producing a functional sigma subunit for RNA polymerase. Inability to synthesize a functional sigma subunit would have the most direct effect on
A. translation termination. B. translation initiation. C. transcription termination. D. transcription initiation. E. transcription elongation.