WorksheetsPBS
Total questions: 15
Worksheet time: 15mins
Which lanes represent DNA from the same person?
1 and 2
2 and 3
1 and 4
3 and 4
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
The wall of the _____ is thicker because it has to pump blood to the whole body.
right atrium
left atrium
right ventricle
left ventricle
Which is the Left Atrium?
C
E
K
M
Which is the Right Ventricle?
C
E
K
M
PBS is commonly used in laboratories as a buffer solution. What does PBS stand for?
Phosphate Buffered Saline
Potassium Buffered Solution
Protein Binding Substance
Polymer Based Solvent
In cell culture, why is PBS often used to wash cells?
To provide nutrients to the cells
To maintain pH and osmotic balance
To stain the cells for observation
To increase cell growth rate
