Ielts Reading Answers | Investigating A Crime Scene

Find a real IELTS Reading practice test on forensic science (Cambridge IELTS books often have one) and apply these strategies. Time yourself for 20 minutes. Then check your answers against the “chain of custody” of your own learning—track your mistakes and improve.

Why is plastic bad for blood samples? Answer: traps moisture Investigating A Crime Scene Ielts Reading Answers

Answer: False Explanation: Paragraph D explicitly says: “DNA-rich sources… packaged in paper bags (never plastic, as plastic traps moisture and promotes bacterial growth).” Find a real IELTS Reading practice test on

Finally, the ‘forensic chain of custody’ is the legal lifeblood of any investigation. This is the chronological documentation that tracks every transfer of evidence from the moment it is seized until it appears in court. Each transfer requires a signature, date, and purpose. A break in this chain—even an unlogged hour—can render the evidence inadmissible. In high-profile cases, a single missing signature on a seal has led to acquittals. Therefore, crime scene managers employ barcode systems, tamper-evident tapes, and secure storage lockers to ensure that the evidence presented is the same as the evidence recovered. Why is plastic bad for blood samples

The investigation process relies heavily on the preservation of evidence. To prevent (6) __________, officers must seal off the area immediately. During the search phase, investigators often use a

To avoid contaminating the scene with their own biological material.