Substance X is a charged molecule of small molecular weight. It is found at higher concentrations outside of cells than inside. How might substance X enter cells?

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#Question id: 12063

#XL - S Microbiology

Green algae often differ from land plants in that some green algae

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#Question id: 11392

#XL - S Microbiology

Modes of obtaining nutrients, used by at least some bacteria, include all of the following except

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#Question id: 27337

#XL - T Zoology

The approximate number of nucleotides in tRNA molecule is ________?

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#Question id: 1120

#XL - Q Biochemistry

A mutation that knocks out the GTPase activity of a G protein would have what effect on a cell?

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#Question id: 424

#XL - R Botany

Phosphorylation at the expense of ATP is catalyzed by ________.