PBS

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

Time of death is determined by measuring

• rigor mortis

• pupil dilation

• environmental temperature

• core body temperature

A DNA strand that reads ATGGC has a complimentary strand that reads

• CGGTA

• TACCG

• GCCAT

• ATGGC

Blood from 2 meters from the ground

• is 2 cm in diameter

• is 1.2 cm in diameter

• is not included in the chart

• is circular in shape

How many chambers are in the human heart?

• one

• two

• three

• four

How many oxygenated chambers are in the human heart?

• one

• two

• three

• four

Arteries carry blood _____ the heart.

• toward

• away from

• near

• outside

What is the purpose of valves in the heart?

• to push blood forward

• to prevent blood from flowing backwards

• to carry oxygenated blood to the body

• to carry deoxygenated blood to the heart

Which of the following is the measure of the number of times the heart beats in a minute?

• blood pressure

• heart rate

• electrocardiogram (EKG)

• biopsy

The right side of the heart contains _____ blood and the left side of the heart contains _____ blood.

• oxygenated; deoxygenated

• deoxygenated; oxygenated

• deoxygenated; deoxygenated

• oxygenated; oxygenated