PBS 1.1.4-1.1.6

Front

What is the independent variable in an experiment involving blood drop height?

Back

The height of blood dropped.

Front

What device is used to measure small volumes of liquid in a laboratory setting?

Back

Micropipetter.

Front

Which component of blood is primarily responsible for clotting and stopping bleeding?

Back

Platelets.

Front

If blood clumps with anti-B serum but not with anti-A serum, what is the blood type?

Back

B.

Front

What is the most common presumptive blood test that uses phenolphthalein?

Back

Kastle-Meyer.

Front

What is the function of platelets in the blood?

Back

To help stop bleeding by forming clots.

Front

What does a positive reaction in the Kastle-Meyer test indicate?

Back

The presence of hemoglobin in the sample.

Front

What is the significance of independent and dependent variables in an experiment?

Back

Independent variables are manipulated to observe their effect on dependent variables.

Front

What is the role of anti-sera in blood typing?

Back

To determine the presence of specific antigens on red blood cells.

Front

What is the principle behind the Kastle-Meyer test?

Back

It detects the presence of blood based on the reaction of phenolphthalein with hemoglobin.