Question 1

Superglue fuming allows a crime scene investigator to visualize ____ that were not previously apparent.
A) visible prints
B) latent prints
C) plastic prints
D) none of the above

Accepted Answer

Superglue fuming can reveal latent prints, which are not visible to the naked eye.

Question 2

Which of the following is a fingerprint identification database?
A) CODIS
B) PDQ
C) NIBIN
D) IAFIS

Accepted Answer

IAFIS (Integrated Automated Fingerprint Identification System) is a fingerprint identification database maintained by the Federal Bureau of Investigation (FBI) which stores the fingerprints and criminal histories of millions of individuals. CODIS (Combined DNA Index System) is a DNA database, PDQ (International Forensic Automotive Paint Data Query) is a database used for identifying automotive paint, and NIBIN (National Integrated Ballistic Information Network) is a database used for analyzing and storing ballistic evidence.

Question 3

Which of the following is a chemical in fingerprints that reacts with ninhydin?
A) amylase
B) amino acids
C) fatty acids
D) ethanol

Accepted Answer

Amino acids are the primary component of sweat and therefore present in fingerprints. Ninhydrin reacts with amino acids to produce a visible blue or purple color, which is what allows for the visualization of fingerprints. Amylase is an enzyme found in saliva, not in fingerprints. Fatty acids and ethanol are also not specific components of fingerprints.

Question 4

Which of the following is a chemical that reacts with lipids in fingerprints?
A) Sudan black
B) SPR
C) Oil Red O
D) all of the above

Accepted Answer

All of the listed chemicals (Sudan black, SPR, and Oil Red O) are known to react specifically with lipids in fingerprints, making them visible for identification purposes.

Question 5

Which of the following fingerprint development methods should be performed last, if necessary?
A) physical developer
B) iodine fuming
C) fluorescent powder
D) ninhydrin

Accepted Answer

Physical developer is a silver-based method used to develop fingerprints on porous surfaces, especially when other chemical methods like ninhydrin have failed or are deemed unsuitable. It is typically used as a last resort because it can interfere with or destroy details that other methods might reveal.

Question 6

Name a method to preserve a fingerprint and remove it with the evidence.

Accepted Answer

The answer of Name a method to preserve a fingerprint...

Question 7

Name a method to develop latent prints on light colored surfaces on a small area using a physical technique.

Accepted Answer

The answer of Name a method to develop latent prints...

Question 8

Name a chemical method of developing prints on colorful aluminum surfaces.

Accepted Answer

The answer of Name a chemical method of developing prints...

Question 9

What is a latent fingerprint?

Accepted Answer

The answer of What is a latent fingerprint?...

Question 10

List and briefly describe five methods that can be used to detect and develop latent fingerprint evidence and which biological component of the fingerprint it reacts with or binds to.

Accepted Answer

The answer of List and briefly describe five methods that...

Question 11

Explain how ninhydrin works.

Accepted Answer

The answer of Explain how ninhydrin works....

Question 12

Explain how black powder interacts with the components of the print.

Accepted Answer

The answer of Explain how black powder interacts with the...

Question 13

Explain how superglue fuming works.

Accepted Answer

The answer of Explain how superglue fuming works....

Quiz 12: Latent Print Development

Superglue fuming allows a crime scene investigator to visualize ____ that were not previously apparent.

Which of the following is a fingerprint identification database?

Which of the following is a chemical in fingerprints that reacts with ninhydin?

Which of the following is a chemical that reacts with lipids in fingerprints?

Which of the following fingerprint development methods should be performed last, if necessary?