August 2025 Biology Regents Exam · questions and answer key
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The August 2025 Biology Regents exam (the Regents Examination in Life Science: Biology) has 45 questions, 27 multiple choice and 18 constructed response, organized into ten question clusters. Select a cluster to see its questions with the answer key. Each question is listed with the NYSSLS performance expectation it assesses. Data on the percentage of students answering correctly is not yet available.
Trees Have Organ Systems · Questions 1–4
| Question | Standard | % correct |
|---|---|---|
| Question 1 | HS-LS1-2 | — |
| Question 2 | HS-LS1-3 | — |
| Question 3 | HS-LS2-2 | — |
| Question 4 | HS-ESS2-6 | — |
Strategies for Survival in Different Animal Species · Questions 5–10
| Question | Standard | % correct |
|---|---|---|
| Question 5 | HS-LS2-8 | — |
| Question 6 | HS-LS4-2 | — |
| Question 7 | HS-LS2-2 | — |
| Question 8 | HS-LS4-3 | — |
| Question 9 | HS-LS4-2 | — |
| Question 10 | HS-LS4-4 | — |
A Unique Relationship: Mulberries and Silk · Questions 11–14
| Question | Standard | % correct |
|---|---|---|
| Question 11 | HS-LS1-7 | — |
| Question 12 | HS-LS1-6 | — |
| Question 13 | HS-LS1-2 | — |
| Question 14 | HS-LS1-1 | — |
Ivory and Elephants · Questions 15–19
| Question | Standard | % correct |
|---|---|---|
| Question 15 | HS-LS2-2 | — |
| Question 16 | HS-LS3-3 | — |
| Question 17 | HS-LS4-4 | — |
| Question 18 | HS-LS2-6 | — |
| Question 19 | HS-ETS1-3 | — |
Carbon Cycle Supports Life on Earth · Questions 20–23
| Question | Standard | % correct |
|---|---|---|
| Question 20 | HS-LS2-5 | — |
| Question 21 | HS-LS2-5 | — |
| Question 22 | HS-ESS2-6 | — |
| Question 23 | HS-ESS2-6 | — |
Keratin – A Very Versatile Protein · Questions 24–28
| Question | Standard | % correct |
|---|---|---|
| Question 24 | HS-LS1-1 | — |
| Question 25 | HS-LS1-4 | — |
| Question 26 | HS-LS1-1 | — |
| Question 27 | HS-LS3-2 | — |
| Question 28 | HS-LS4-2 | — |
How Do Kangaroo Rats Survive in the Desert? · Questions 29–32
| Question | Standard | % correct |
|---|---|---|
| Question 29 | HS-LS1-2 | — |
| Question 30 | HS-LS4-4 | — |
| Question 31 | HS-LS1-2 | — |
| Question 32 | HS-LS2-1 | — |
Evolutionary Relationships · Questions 33–36
| Question | Standard | % correct |
|---|---|---|
| Question 33 | HS-LS4-1 | — |
| Question 34 | HS-LS4-2 | — |
| Question 35 | HS-LS4-1 | — |
| Question 36 | HS-LS4-1 | — |
The Human Journey from One Cell to 30 Trillion · Questions 37–41
| Question | Standard | % correct |
|---|---|---|
| Question 37 | HS-LS1-8 | — |
| Question 38 | HS-LS1-4 | — |
| Question 39 | HS-LS1-8 | — |
| Question 40 | HS-LS1-4 | — |
| Question 41 | HS-ETS1-3 | — |
Driving the Florida Panther to Extinction · Questions 42–45
| Question | Standard | % correct |
|---|---|---|
| Question 42 | HS-LS4-4 | — |
| Question 43 | HS-LS2-4 | — |
| Question 44 | HS-LS4-5 | — |
| Question 45 | HS-ETS1-3 | — |
Page contributors: Caroline Leonard