1.
The protein found in the blood that is responsible for transporting oxygen is
Correct Answer
B. Hemoglobin
Explanation
Hemoglobin is the correct answer because it is a protein found in red blood cells that binds to oxygen molecules and transports them throughout the body. It has a high affinity for oxygen, allowing it to efficiently carry oxygen from the lungs to the tissues and organs. Erythropoietin is a hormone that stimulates the production of red blood cells, gamma globulin is a type of antibody, and none of these options specifically transport oxygen like hemoglobin does.
2.
Which is not a granulocyte?
Correct Answer
C. Leucocyte
Explanation
A granulocyte is a type of white blood cell that contains granules in its cytoplasm. Neutrophils and basophils are both types of granulocytes. Leucocyte, on the other hand, is a general term for white blood cells, which includes both granulocytes and agranulocytes. Therefore, leucocyte is not a specific type of granulocyte.
3.
The proteins of the blood are formed by the
Correct Answer
D. Liver
Explanation
The liver is responsible for producing proteins in the blood. It synthesizes various proteins, including albumin, clotting factors, and transport proteins. These proteins play crucial roles in maintaining the body's overall health and function. The liver also helps in detoxification and metabolism, making it a vital organ for protein production and other essential functions in the body.
4.
What characteristic of platelets makes them well suited for their function?
Correct Answer
A. Sticky
Explanation
Platelets are well suited for their function due to their sticky characteristic. This allows them to adhere to damaged blood vessels and form clots, preventing excessive bleeding. The stickiness of platelets enables them to aggregate together and form a plug at the site of injury, promoting the healing process. Additionally, their small size allows them to easily navigate through narrow blood vessels and reach the site of injury efficiently. The full cell complement and huge size options are incorrect as platelets are actually small cell fragments rather than full cells, and they are not considered large in size.
5.
The substance that stimulates the formation of white blood cells is
Correct Answer
C. Colony-stimulating factors
Explanation
Colony-stimulating factors are substances that stimulate the formation and maturation of white blood cells in the body. They are produced by various cells in the bone marrow and play a crucial role in regulating the production of different types of white blood cells, such as granulocytes, monocytes, and lymphocytes. These factors are important for maintaining a healthy immune system and fighting off infections. Erythropoietin and thrombopoietin, on the other hand, are substances that stimulate the production of red blood cells and platelets, respectively. Therefore, the correct answer is colony-stimulating factors.
6.
Which white blood count may indicate an infection in the body?
Correct Answer
A. 30000/mm3
Explanation
5000-10000 is the normal range
7.
Substances that fight foreign material in the blood are called
Correct Answer
B. Agglutinins
Explanation
agglutinins are antibodies; antigens are agglutinogens
8.
Which blood type lacks antigens?
Correct Answer
D. O
Explanation
A has A antigens, B has B antigens and AB has both A and B antigens
9.
Erythrocytes are flattened because
Correct Answer
D. Organelles eject during maturation
Explanation
During the maturation process of erythrocytes, organelles are ejected from the cell. This is necessary for the cell to become specialized and carry out its main function, which is to transport oxygen. By removing the organelles, the cell becomes flattened and takes on its characteristic biconcave shape. This shape allows the erythrocytes to fit through the narrow vessels in the circulatory system, ensuring efficient oxygen delivery to tissues throughout the body.
10.
If the D antigen is present, blood is
Correct Answer
A. +
Explanation
If the D antigen is present in blood, it means that the blood is Rh positive. Rh positive blood can be transfused to individuals who are Rh positive or Rh negative, making it compatible with a larger population. Therefore, the presence of the D antigen is not fatal and does not cause any harm to the recipient.
11.
When a blood vessel is damaged, this hormone is needed to constrict blood vessels to reduce blood loss.
Correct Answer
A. Serotonin
Explanation
Serotonin is a hormone that is needed to constrict blood vessels when they are damaged in order to reduce blood loss. When a blood vessel is injured, serotonin is released, causing the smooth muscles in the blood vessel walls to contract, narrowing the blood vessel and reducing the flow of blood. This constriction helps to minimize blood loss and allows the body to initiate the clotting process to repair the damaged vessel.
12.
If the blood contains over 55% RBCs, the individual is said to be
Correct Answer
B. Polycythemic
Explanation
anemics have below 38% RBC and hemophiliacs have a deficiency of platelets and clotting factors
13.
A blood clot that is moving through the bloodstream is a
Correct Answer
D. Embolism
Explanation
an embolism gets lodged or stuck and can cause blockages, etc.
14.
Type A blood can receive donations from
Correct Answer
D. A and O
Explanation
Type A blood can receive donations from individuals with blood types A and O. This is because type A blood has antigens on its surface that can accept antibodies from type A and type O blood. Type A blood cannot receive donations from individuals with blood types B or AB because the antibodies present in type A blood would react with the antigens present in type B or type AB blood.
15.
In the black US population, 2 blood types are found in near equal percentages. Those 2 blood types are
Correct Answer
B. A and B
Explanation
The correct answer is A and B. This is because blood types A and B are found in near equal percentages in the black US population. Blood type O is not mentioned in the question, so it is not one of the two blood types found in near equal percentages. The combination of blood types AB and O is also not mentioned in the question.