PBS

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 is the Left Atrium?

• C

• E

• K

• M

Which is the Right Ventricle?

• C

• E

• K

• M

Which is the Pulmonic Valve?

• D

• F

• L

• N

Which is the Mitral Valve?

• D

• F

• L

• N

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

What does PBS stand for in a scientific context?

• Phosphate Buffered Saline

• Polymerase Binding Site

• Protein Binding Solution

• Proton Beam Source

What is the primary use of PBS in laboratory experiments?

• To stain cells

• To buffer solutions

• To wash cells

• To fix cells

Which of the following is a key component of PBS?

• Sodium chloride

• Calcium chloride

• Magnesium sulfate

• Potassium iodide