Question

1.Which of the following is TRUE?

Select one:

a. Hemoglobin binds oxygen.

b. Red blood cells have a nucleus.

c. The plasma in blood is bright red.

d. Red blood cells are derived from leukocytes.

e. Red blood cells and white blood cells arise from different stem cells found in bone marrow.

2. The inflammatory response is an example of a type of physical barrier that provides immune defense.

Select one:

True

False

Answer 1

1. The following statement-

A. Hemoglobin binds to the oxygen- correct

Hemoglobin is a protein present in the red blood cells that carry oxygen from the lungs to the body's tissues.

B. Red blood cells have a nucleus - Incorrect

Red blood cell (RBC) devoid of the nucleus. In maturation, the cell will extrude its nucleus, a process called enucleation.

C. The plasma in the blood is bright red- incorrect

Blood plasma is the yellow liquid, not the red. Due to the presence of the hemoglobin, the blood becomes red.

D.  Red blood cells are derived from leukocytes.- incorrect

Red blood cells are produced from the bone marrow cells and not from the leukocyte.

E. Red blood cells and white blood cells arise from different stem cells found in bone marrow- Incorrect

In the bone marrow, all blood cells originate from a single type of cell called a stem cell by the division. The stem cell wich gives rise to red blood cells, white blood cells, and platelets called hematopoietic stem cells.

2. The inflammatory response is an example of a type of physical barrier that provides immune defense - False

The inflammatory response is not a physical barrier of immune defense. In the immune defense mechanism, the physical barriers are tight junctions in the skin or mucus. The inflammatory response is an anatomical barrier.