PBS Unit 1 (2nd review)

The outermost layer of hair is called the...

• cortex

• medulla

• cuticle

• keratin

This fingerprint is an example of a...

• arch

• whorl

• loop

• tented arch

Which blood cell provides a major defense for our bodies against bacteria and viruses?

• erythrocyte

• leukocyte

• thrombocyte

• plasma

Tags

NGSS.MS-LS1-3

Other than ridge patterns, what else do scientists use to identify and match fingerprints?

• minutiae

• medulla

• whorls

• keratin

Are polygraphs admissible in a court case?

• Yes

• No

Which of the following is the most common presumptive blood test that uses phenolphthalein which reacts with hemoglobin?

• Luminol

• Leucocrystal Violet

• Kastle-Meyer

What is always done after a crime scene is investigated?

• analyze evidence

• interview persons of interest

• create graph

• call coroner

Which lanes represent DNA from the same person?

• 1 and 2

• 2 and 3

• 1 and 4

• 3 and 4

Tags

NGSS.HS-LS3-1

What happens to the diameter of a blood drop as the height the drop falls from increases?

• increases

• decreases

• stays the same

• it varies

Gel electrophoresis separates DNA fragments based on their:

• size

• bases

• sugar

• nitrogen