Which of the following factors causes extremely high levels of toxic chemicals in fish-eating birds?

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#Question id: 8290

#SCPH28 | Zoology

If, someday, an archaean cell is discovered whose rRNA sequence is more similar to that of humans than the sequence of mouse rRNA is to that of humans, the best explanation for this apparent discrepancy would be ________.

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#Question id: 3858

#SCPH06 I Botany

The 5' methyl guanosine caps added during RNA chain elongation performs what function?

1. prevents degradation by nucleases 

2. are recognized by protein factors

3. are used to identify the type of RNA

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#Question id: 1644

#I Life Science/ Life Sciences Group – I-V

What is the single best defining feature of a lymphocyte?

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#Question id: 348

#I Life Science/ Life Sciences Group – I-V

Sulfur is in the same column of the periodic table as oxygen, but has electronegativity similar to carbon. Compared to water molecules, molecules of H2S will ________.

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#Question id: 19353

#SCPH01 Biochemistry

Gene uidA encodes the enzyme P-glucourinidase which acts on the substrate