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Which of the following is a protein present in blood plasma?

A.

Monocytes

B.

Platelets

C.

Fibrinogen

D.

Lymphocytes

Answer and Explanation

The Correct Answer is C

Fibrinogen. Fibrinogen is a protein present in blood plasma that plays a key role in blood clotting. When an injury occurs and bleeding begins, fibrinogen is converted into fibrin, which forms a mesh-like structure that helps to trap blood cells and form a clot.

A. Monocytes are a type of white blood cell, not a protein present in blood plasma.

B. Platelets are cell fragments that play a role in blood clotting, but they are not a protein present in blood plasma.

D.  Lymphocytes are a type of white blood cell, not a protein present in blood plasma.


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Related Questions

Correct Answer is A

Explanation

Heart and lungs. The thoracic cavity contains the heart and lungs, which are at greatest risk from severe blunt trauma to this area.

B. The brain and spinal cord are not located in the thoracic cavity and are therefore not at greatest risk from blunt trauma to this area.

C. The liver and stomach are located in the abdominal cavity, which is below the thoracic cavity. While these organs may be affected by severe blunt trauma to the thoracic cavity, they are not at the greatest risk.

D. The large and small intestines are also located in the abdominal cavity and are not at the greatest risk from blunt trauma to the thoracic cavity.

Correct Answer is D

Explanation

Enzymes are a type of protein that catalyze chemical reactions in the body. Proteins are one of the four main classes of biological molecules, along with lipids, carbohydrates, and nucleic acids. The other options are not classes of biological molecules that include enzymes. Lipids are a class of molecules that includes fats and oils, vitamins are organic compounds that are essential for normal growth and nutrition, and carbohydrates are a class of molecules that includes sugars and starches.

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