Which of the following molecules would most likely require a transport protein to cross the plasma membrane of a red blood cell?

A. CO2
B. H2O
C. O2
D. C6H12O6


Answer Key: D

Biology & Microbiology

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In an mRNA transcript, the 3' UTR refers to the region of the mRNA that is ____

a. upstream from the start codon b. upstream from the site for initiation of transcription c. downstream from the stop codon d. the coding region e. downstream from the site for termination of transcription

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Laminaria is the genus of kelp that dominates in:

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The term reproductive isolation mechanism refers to ____

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