In a DNA molecule, deoxyribonucleotides are joined into a polymer by the covalent linkage of a phosphate group. The covalent link termed as:

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#Question id: 1098

#XL - Q Biochemistry

Which of the following is the most plausible explanation for why an animal cell would be unable to reduce the Ca2+ concentration in its cytosol compared with the extracellular fluid?

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#Question id: 3886

#XL - Q Biochemistry

Which one of the following statements about the reverse transcriptases of retroviruses and the RNA replicases of other single-stranded RNA viruses, such as R17 and influenza virus, is correct?

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#Question id: 1609

#XL - S Microbiology

Which of the following does the mononuclear phagocyte system NOT include?

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#Question id: 423

#XL - Q Biochemistry

The glycolytic pathway oxidizes glucose to two molecules of pyruvate and also produces a net of two molecules of ATP. ATP allosterically inhibits the enzyme, PFK-1, that catalyzes the third step of glycolysis. This is an example of ________.

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#Question id: 8933

#XL - S Microbiology

At which developmental stage should one be able to first distinguish a diploblastic embryo from a triploblastic embryo?