For the reaction C(s) + O2(g) → CO2(g)

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#Question id: 20090

#XL - P Chemistry

Mention number of bonding electron pairs and nonbonding electron pairs in NO₃^- ion

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#Question id: 3789

#XL - Q Biochemistry

What do telomeres do?

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#Question id: 1752

#XL - Q Biochemistry

Dendritic cells can be driven from a resting state to an activated state by the T-cell surface molecule:

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#Question id: 561

#XL - Q Biochemistry

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

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#Question id: 194

#XL - T Zoology

Which does not return to its original form after each catalysis?