Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the operator to the far end of the operon, past the transacetylase (lacA) gene, which of the following processes would likely occur when the cell is exposed to lactose?

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#Question id: 219

#Unit 1. Structure and Function of Biomolecules

Why has dihydrofolate reductase been identified as a potential target for chemotherapy in the treatment of cancer?

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#Question id: 220

#Unit 1. Structure and Function of Biomolecules

Which structure is not a part of folate?

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#Question id: 221

#Unit 1. Structure and Function of Biomolecules

Which statement is false about 5,6,7,8-tetrahydrobiopterin?

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#Question id: 222

#Unit 1. Structure and Function of Biomolecules

Which vitamin is shown below? 

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#Question id: 223

#Unit 1. Structure and Function of Biomolecules

Which coenzyme links to a lysine residue in a proteinʹs active site?

A) biotin

B) lipoic acid (lipoamide)

C) pyridoxal phosphate

D) biotin and pyridoxal phosphate only

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#Question id: 224

#Unit 1. Structure and Function of Biomolecules

Which type of atom is involved in the reactive center of lipoamide?