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10 experimental passages (60 questions) across Bio/Biochem disciplines — the passage-based reps this section is built on. Practice one at a time with full explanations, or run the whole set.
Alkaline phosphatase (AP) hydrolyzes phosphate monoesters, releasing inorganic phosphate. Researchers purified…
5 questions
Gene R encodes a transcription factor hypothesized to repress gene T in mammalian liver cells. To test this, i…
In skeletal muscle, insulin stimulates glucose uptake by promoting translocation of the GLUT4 transporter from…
A metabolic disorder, condition Q, follows autosomal recessive inheritance. Affected individuals are homozygou…
In the kidney, plasma is filtered at the glomerulus, and the proximal tubule reabsorbs filtered glucose using …
A team studied an E. coli culture grown in liquid medium, monitoring density by optical density at 600 nm (OD6…
Cellular respiration couples the oxidation of fuels to ATP synthesis. In oxidative phosphorylation, the electr…
A laboratory purified a soluble enzyme, protein P, and characterized it using gel electrophoresis and size-exc…
6 questions
A clinical laboratory developed a test for a disease allele caused by a single base substitution that creates …
The adaptive immune response generates antibodies specific to a pathogen. On first exposure to an antigen, the…
The following questions are independent of any passage — each stands alone, as in the discrete sets on the rea…
9 questions