Phenylketonuria (PKU) results from a deficiency of:

The ubiquitin-proteasome system: (select all that apply)

Leptin is secreted by _______ to reduce hunger.

Major determinants of basal metabolic rate include all of the following except:

Kidney gluconeogenesis becomes the major source during starvation.

9. Photosynthesis happens in:

Evaluate the following claim and answer the question based on your understanding of biological concepts we’ve covered so far. Which choices reflect strong everyday scientific literacy? Select all that apply. 

Evaluate the following claim and answer the question based on your understanding of biological concepts we’ve covered so far. Scientists found the gene for intelligence. What is the most accurate interpretation?

R5 (Scientific reasoning)A school introduces a tutoring program and also shortens class periods. Test scores rise afterward. What can be concluded most responsibly?

Scenario D: Cell division and gene regulationA lab studied a protein (Regulator R) involved in cell division. They compared normal skin cells to melanoma cells. Then they reduced Regulator R in melanoma cells and measured division after 24 hours. Data: Normal: R 1.0; dividing 12% Melanoma: R 3.5; dividing 40% Melanoma + R reduced: R 1.2; dividing 18%D2. The comparison between normal and melanoma cells shows primarily: