BIOLOGY · FULL-LENGTH PRACTICE

Forty questions.
Five domains.

Practice a complete 40-question Biology form. Question order and every five-option answer set change, while the answer key stays correct after every shuffle.

Build a form ↓Inspect the rules →
5official domains
43published subtopics
40questions per form
600practice questions
0claimed score conversions

Complete Biology practice

Work first. Review after submission.

There is no answer feedback during the form. Mark questions, eliminate choices, use the review grid, then export the privacy-minimal raw item result after submission for qualified pilot analysis.

READY WHEN YOU ARE

Open the 40-question form setup.

The question bank and practice controls load only when you open the form. Opening setup does not start the timer or replace saved device-local progress.

Coverage-control rules

Randomized without becoming accidental.

01

Cover

Each form includes all five official Biology domains and one question from 40 different official subtopics.

02

Rotate

Because 40 questions cannot cover 43 subtopics one-for-one, three subtopics are omitted from three different domains and rotate between forms.

03

Balance

The form uses 10 foundation, 20 representative, and 10 challenge labels. These are DAT TRAIN editorial targets—not official or calibrated difficulty values.

04

Preserve

Questions and choices change order, but exact item versions, stable answer identities, visible-item timing, and the raw evidence export remain tied to the frozen manifest.

What the form covers

Every official branch has practice.

All questions are original DAT TRAIN practice mapped to the published Biology scope. No live or remembered ADA questions are copied or reconstructed.

DOMAIN

Cell and Molecular Biology

Subtopics
8
Practice questions
112
DOMAIN

Diversity of Life

Subtopics
8
Practice questions
112
DOMAIN

Structure and Function of Systems

Subtopics
12
Practice questions
168
DOMAIN

Genetics

Subtopics
10
Practice questions
139
DOMAIN

Evolution and Ecology

Subtopics
5
Practice questions
69

Official scope

Length and scope come from the ADA.

The 2026 DAT Candidate Guide ↗ publishes 40 Biology items within the 100-item, 90-minute Survey of Natural Sciences and lists the five Biology domains. The 2026 DAT User’s Manual ↗ provides the matching Biology content specification.

DAT TRAIN is independent and is not affiliated with or endorsed by the American Dental Association. Results are raw practice results, not official scaled-score predictions.