Introduction to Blood

What type of evidence does blood typing provide?

• Individual evidence

• Class evidence

• Direct evidence

• Primary evidence

What is the main function of red blood cells?

• Carry respiratory gases

• Aid in blood clotting

• Produce antibodies

• Fight disease

Which component of blood is used for DNA profiling?

• Plasma

• Platelets

• White blood cells

• Red blood cells

What is the purpose of using Luminol in crime scene investigation?

• To measure blood spatter

• To identify blood type

• To detect DNA

• To detect blood presence

What percentage of blood is plasma?

• 55%

• 10%

• 45%

• 1%

What is the role of platelets in the blood?

• Carry nutrients

• Aid in blood clotting

• Fight infections

• Transport oxygen

What is the main function of white blood cells?

• Transport nutrients

• Aid in digestion

• Fight disease

• Carry carbon dioxide

What happens when the immune system identifies a foreign object?

• Plasma levels rise

• White blood cells converge

• Platelets decrease

• Red blood cells increase

What is the role of antibodies secreted by white blood cells?

• Transport oxygen

• Label foreign objects

• Aid in blood clotting

• Carry nutrients

What is the primary component of blood that carries oxygen?

• Red blood cells

• Plasma

• White blood cells

• Platelets