Cancer cells preferentially convert glucose to lactate even in the presence of oxygen. What is the main advantage of this metabolic shift?

Jet lag is a disorder that results from a mismatch of the circadian clock with external time due to trans-meridian travel. Which of the following statements best describes our ability to entrain to local time when jet lagged:

A 9-year-old boy is diagnosed with acute lymphoblastic leukemia (ALL). He is started on a multidrug chemotherapy regimen that includes L-asparaginase. Two weeks later, he develops fatigue, easy bruising, and mild confusion. Laboratory studies show: serum albumin levels are decreased and ammonia levels are increased. Which of the following best describes the mechanism of action of this drug?

The black arrows point to a small round radiolucency surrounded by a radiopacity.  The radiopacity represents the ____.

Activated PI3K/Akt signaling in advanced cancers activates which of the following processes

Ras GTPases are molecular switches that cycle between an on, GTP, bound state and an off, GDP bound state. Which of the following processes would you target to inhibit its association with the plasma membrane?

Protein kinase A is a V-type allosteric enzyme. Briefly explain how the V0 vs. [ATP] curve (initial velocity versus substrate concentration) will change in terms of Km and Vmax, when the cAMP concentration increases. Note ATP is the substrate and the reaction catalyzed by the free catalytic subunit follows the Michaelis-Menten equation.

Which of the following is not a type of post-translation modification?

Which of the following are not part of the translation machinery in eukaryotes?

Which of the following is not key aspect of the genetic code, specifically regarding codons?