DAT Prep

DAT Biology: High-Yield Topics for Your Final Review Week

Biology is the broadest section on the test. In your last week, coverage is impossible, so prioritization is the whole strategy.

The biology section spans an enormous amount of material, which means the final week cannot be about covering everything. It should be about reinforcing what appears most often and shoring up your specific weak areas.

Topics that consistently carry weight

Cell biology

Organelle structure and function, membrane transport including active and passive mechanisms, and the cell cycle. Mitosis and meiosis phases are tested directly and reliably, including what distinguishes them and where each event occurs.

Molecular biology and genetics

DNA replication, transcription, and translation, including where each occurs and what enzymes are involved. Mutation types and their consequences. Mendelian genetics and pedigree interpretation. Hardy-Weinberg calculations appear frequently and are straightforward points once you are comfortable with the algebra.

Human physiology

This is worth disproportionate attention for pre-dental students, since it also serves you later. Major systems and how they interact: cardiovascular, respiratory, digestive, nervous, endocrine, renal. Know the pathway of blood through the heart, the mechanics of gas exchange, and which hormone comes from which gland and does what.

Biochemistry and metabolism

Enzyme function and inhibition types. The broad shape of cellular respiration and where each stage occurs, including net ATP yields. You are more likely to be asked where something happens and what it produces than to reproduce a full pathway.

Evolution and ecology

Natural selection mechanisms, speciation, and population genetics. Generally lighter weight but the questions tend to be answerable if you know the concepts.

How to actually use the final week

1. Stop learning new material. The return on introducing something unfamiliar this late is low, and it comes at the cost of reinforcement.
2. Work from your error log. If you have been tracking missed questions, that list is your study plan. If you have not been, this is the argument for starting one earlier next time.
3. Do practice questions, not reading. Retrieval beats review for retention, and it surfaces gaps that rereading hides.
4. Review diagrams and pathways visually. Much of biology is spatial and sequential, and redrawing something from memory tests it better than looking at it.
5. Taper. The last day or two should be light. Sleep matters more than one additional review session.

A note on dental relevance

Some biology content shows up again in dental school, particularly physiology, head and neck anatomy, and microbiology. Learning it properly now rather than cramming it has compounding value.

Test yourself with our free DAT biology questions, and if you are earlier in the process, our study schedule guide covers how to structure the weeks leading up to this one.

ChairsideSource is not affiliated with the American Dental Association or the official Dental Admission Test. Verify current exam content outlines with the official source.