Cell Biology MCAT Practice Questions
13 board-style MCAT questions in Biological & Biochemical Foundations (B/B). Each question shows the correct answer; create a free account for the full explanation and adaptive practice.
- MCAT · medium1. A 34-year-old woman presents with selective hearing loss and mild intellectual disability. Genetic testing reveals a heterozygous loss-of-function mutation in KAT6A, which encod…
- MCAT · medium2. A 14-year-old boy presents with recurrent severe infections, lymphadenopathy, and hepatosplenomegaly. Flow cytometry reveals a marked expansion of immature T cells with increase…
- MCAT · medium3. During mitosis, a checkpoint protein detects an unattached kinetochore on one sister chromatid pair. The cell halts progression to anaphase, and the spindle checkpoint complex r…
- MCAT · medium4. A 45-year-old woman with a history of progressive exercise intolerance and myalgias undergoes muscle biopsy. Electron microscopy reveals abnormal mitochondria with irregular cri…
- MCAT · medium5. A 34-year-old woman with a family history of intellectual disability undergoes genetic testing that reveals a heterozygous loss-of-function mutation in PABP1 (poly(A) binding pr…
- MCAT · medium6. A 34-year-old woman with a history of recurrent infections and poor wound healing undergoes genetic testing that reveals mutations affecting SNARE protein function. Researchers…
- MCAT · medium7. A 54-year-old man with a history of renal cell carcinoma undergoes tumor genomic sequencing. Analysis reveals a loss-of-function mutation in the VHL gene (von Hippel-Lindau). Im…
- MCAT · medium8. A 28-year-old woman presents with a history of early-onset breast cancer and a family history of cancer. Genetic testing reveals a mutation in RAD51. Her fibroblasts are obtaine…
- MCAT · medium9. A molecular biologist is studying protein synthesis in a cell-free system. When mRNA encoding a secretory protein is translated in vitro without microsomes, the resulting polype…
- MCAT · medium10. A 45-year-old woman with rheumatoid arthritis is enrolled in a clinical trial testing a novel mitochondrial-targeted therapeutic agent. The drug inhibits opening of the mitochon…
- MCAT · medium11. A patient presents with severe hemolytic anemia. Red blood cell analysis reveals normal hemoglobin content and oxygen binding curves, but cells exhibit rapid osmotic lysis in hy…
- MCAT · medium12. A 45-year-old woman with a history of recurrent cervical dysplasia undergoes a research study examining cell cycle regulation in her cervical epithelial cells. Synchronization e…
- MCAT · medium13. A 3-year-old boy presents with progressive muscle weakness, developmental delay, and recurrent lactic acidosis episodes. His parents report normal early development until age 18…