The substrate for the committed step in glycolysis is:

A child is throwing a temper tantrum and told her parents she would hold her breath until she would faint. By doing so, she stopped expelling volatile acids out of her system. What would happen to her blood and pH levels?

Prions cause a variety of neurodegenerative disorders that result from a conformational change at the level of the _____________ protein structure.

Please correctly match the characteristics with the different DNA forms.

The beta-globin gene from a thalassemic patient was cloned and sequenced.  The technician who characterized this gene informs you that a point mutation was found, but that it can not account for the thalassemia because the mutation occurred within an intron sequence.  What doesn’t the technician understand?

Which of the following best describes a frameshift mutation?

Tetracycline is an antibiotic that binds to the 30S subunit of the bacterial ribosome.  This information suggests that the most likely mechanism by which tetracycline blocks bacterial growth is to inhibit synthesis of:

Which is not true regarding enzymes lowering the activation energy of a reaction?

Which is the only amino acid that does not have a resonance isomer (i.e. enantiomer with L and D forms)?

Which of the following statements describes purines and pyrimidines in DNA molecules?