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AQA A Level Biology Exam 2025 Questions and Answers
AQA A Level Biology Exam 2025 Questions and Answers
Course:
AQA A Level
Institution:
AQA A Level
AQA A Level Biology Exam 2025 Questions and Answers
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| Uploaded on: | September 14, 2025 |
| Last updated: | September 14, 2025 |
| Number of pages: | 167 |
| Written in: | 2025/2026 |
| Type: | Exam (elaborations) |
| Contains: | Questions & Answers |
| Tags: | AQA A Level Biology Exam 2025 Questions and Answers |
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AQA A Level Biology Exam 2025 Questions and Answers what are killer t-cells? - --CORRECT ANSWER--- cytotoxic cells - bind to non-self antigens how to killer t-cells work? - --CORRECT ANSWER--1. virus attaches to and enters host cell 2. viral DNA causes host cell to express viral antigens on its surface 3. killer t-cells attaches to viral antigens on infected cells 4. killer t-cells induces death of infected cell (apoptosis) what is apoptosis? - --CORRECT ANSWER--programmed cell death how do killer t-cells destroy cancer? - --CORRECT ANSWER--- cancerous = mutations - mutations = abnormal antigens - killer t-cell binds to abnormal antigens - killer t-cells induces death of cancerous cell ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
