PLTW PBS Practice 1.1

Which pattern is a whorl fingerprint pattern?

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Which of the following blood types occur when someone lacks (does not have) A and B antigens on their red blood cells?

• A

• B

• O

• AB

A study was done on running para-athletes to compare prosthetics. They measured the athletes heart rate after running a half-mile with different prosthetics.

What is the dependent variable?

• The athletes

• The different prosthetics

• Athlete's heart rate

• The half-mile

This is a gel electrophoresis comparing a sample of hair from a crime scene to the victim and people of interest.

The hair sample from the scene is in lane 2.

Which lane does it match with?

• Lane 1

• Lane 3

• Lane 4

• Lane 5

Name the proteins on the surface of red blood cells.

• Antibodies

• Antigens

• Plasma

• Collagen

If an unknown blood sample clumps with anti-A serum and not with anti-B serum, what is the blood type?

• AB
• O
• A
• B

Match the bottom half of this DNA sequence -

GCCTA

• CGGAT

• TAAGC

• ATTCG

• GCCTA

What are restriction enzymes? Select all that apply.

• They cut DNA sequences at certain points.

• They come from bacteria.

• There is only one that exists for use.

• They restrict the growth of DNA.

Which of the following is a bifurcation minutiae?

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Which of these is not a hair structure to analyze for forensic comparisons?

• Cortex

• Medula

• Shaft

• Cerebrum