Forensics Benchmark 2018

DNA pairs are:

• A-T and C-G
• A-G and T-C
• A-C and T-G

Alcohol is considered a...

• stimulant
• depressant
• hallucinogen
• date-rape/club drug

What organ in the body metabolizes (breaks down) most of the alcohol consumed?

• Brain

• Stomach

• Liver

• Intestines

Which of these statements is true regarding a person's Blood Alcohol Concentration?

• Your BAC depends on how many drinks you had and the time over which they were consumed

• Your BAC depends on your weight, what you had to eat, and what medications you are taking

• Neither of these is true

• Both of these are true

DNA can be used to determine

• the age of a suspect.
• the general health of a suspect.
• the identity of badly damaged or degraded remains.
• the height and weight of an unknown suspect.

Choose the correct method for collecting and packaging blood evidence.

• Swab the blood and store in an air tight container.

• Swab the blood, air dry the swab, and package in a paper package.

• Swab the blood, air dry, and store in an air tight container.

• Use a vial to collect as much liquid blood as possible and put a lid on the vial to keep it air tight

Which chemical can be used to detect blood, even if it's been wiped from a surface?

• Ninhydrin

• Cyanide

• CO²

• Luminol

DNA evidence can be found and collected from which of the following items at a violent crime scene? (check all that apply)

• Baseball bat or similar weapon

• Hat

• Opened bottle

• A piece of fingernail

• Bruises on victim's body

The picture to the right is a part of a DNA profile, showing one marker. Why does this marker have two different peaks?

• The marker was amplified twice.
• Each peak is from a different DNA sample.
• The person received one marker from each parent.
• Each peak is a fragment of the same marker.

Why do markers in a DNA profile, like the one to the left with marker #13 highlighted, sometimes have only one peak?

• The person is missing a marker.
• The PCR was done incorrectly and needs to be repeated.
• The person has a genetic disease.
• The person inherited the same marker from both parents.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2