The Biology CBE covers cell structure and function, mechanisms of genetics, biological evolution and classification, biological processes and systems, and interdependence within environmental systems. Each TEKS reporting category is sampled across Semester A and B mock exams.

Expect a mix of factual recall (cell organelles, DNA replication steps, classification levels) and applied reasoning (interpreting graphs, predicting genetic outcomes, analyzing ecosystems). Lab-based experimental design questions are common. Students hitting 80%+ on our mocks typically pass first attempt.

The exam runs about 3 hours with roughly 55–60 questions. Our mock exams match this length and include the same diagram-heavy and graph-interpretation style so your pacing practice is accurate.

Yes — and their functions. The CBE tests on cell structure recurrently. Our practice questions emphasize this: organelle identification from electron micrographs, function matching, and contrasting prokaryotic vs. eukaryotic features.

No physical lab, but expect questions about experimental design — controls, variables, hypothesis testing, and interpreting lab data. About 15–20% of questions reward strong scientific method understanding.

70%. Aim for 85%+ on practice mocks because the genetics and ecology questions can spike in difficulty depending on which TEKS standards your specific exam draws from.