Forensic Science Techniques and Controls

Forensic Science Techniques and Controls

Assessment

Interactive Video

Biology, Science, Chemistry

10th - 12th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial covers the fifth part of identifying bodily fluids, focusing on blood. It explains species identification techniques to determine if blood is of human or animal origin. The video discusses the significance of species identification in forensic investigations, the role of antibodies and antigens, and the methods used, including primary and secondary binding assays. It also covers sample preparation and the use of controls in testing.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary goal of species identification in forensic science?

To detect the presence of DNA in a sample

To determine the age of a blood sample

To identify the species origin of a biological fluid

To measure the volume of a blood stain

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do antigens and antibodies interact in species identification?

Antibodies convert antigens into proteins

Antibodies bind specifically to antigens

Antigens destroy antibodies

Antigens and antibodies do not interact

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a primary binding assay used in species identification?

Radial immunodiffusion

Immunoelectrophoresis

ELISA

Crossed immunoelectrophoresis

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main characteristic of immunochromatographic assays?

They are slow and require laboratory settings

They are rapid, specific, and sensitive

They are only used for DNA analysis

They require large sample volumes

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which technique is NOT a secondary binding assay?

Immunoelectrophoresis

Single immunodiffusion

Double immunodiffusion

ELISA

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using controls in sample preparation?

To eliminate the need for further testing

To increase the volume of the sample

To change the color of the sample

To provide a reference for comparison

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a positive control in forensic analysis?

A sample that is not used in testing

A sample that is contaminated

A sample with an unknown composition

A sample known to contain the substance being tested for

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