Answer:
ABO blood group system, the classification of human blood based on the inherited properties of red blood cells (erythrocytes) as determined by the presence or absence of the antigens A and B, which are carried on the surface of the red cells. Persons may thus have type A, type B, type O, or type AB blood.
Explanation:
Answer:
Performing the ischemia/reperfusion experiment using neutrophil-depleted animals and examining whether the degree of tissue damage is reduced
Explanation:
Neutrophils are one of the important component of the white blood cells. Neutrophils has the ability to phagocytose the cell and these cells first reach at the time of parasitic infections.
In case of reperfusion experiment, the neutrophil cells can be used to obtain the best results. The variables that are used in the experiment can be tested and is limited in the absence and the presence of the neutrophil cells. The tissue damage can be diagnosed by this experiment.
Thus, the correct answer is option (B).
Ans. False.
Coral reefs can be defined as underwater ecosystems, characterized by coral (marine invertebrates) skeletons. Coral reefs can survive only in clean and clear water. Pollutants and sediments smother the coral reefs, reduce water quality, and enhance the growth of damaging algae.
Pollution also makes coral reefs to become susceptible for disease, which impede growth and reproduction of corals, and cause damage to coral reefs.
Thus, the given statement is false as coral reefs are affected by pollution.
Answer:
Vacuum
Explanation:
A vacuum is usually defined as a space in which there is an absence of matter. It can also be said that there is an extremely low amount of pressure due to which the particles present in it are not affected by any type of process that occurs in space. The value of pressure is lower than the value of normal atmospheric pressure.
For example, sound cannot travel in space because there is no medium such as water and air through which the sound waves can propagate.
